diff --git a/AABB_tree/benchmark/AABB_tree/knot_generation.cpp b/AABB_tree/benchmark/AABB_tree/knot_generation.cpp
index aa19db304e44..f562c8b8f4de 100644
--- a/AABB_tree/benchmark/AABB_tree/knot_generation.cpp
+++ b/AABB_tree/benchmark/AABB_tree/knot_generation.cpp
@@ -26,7 +26,7 @@ int main(int argc, char* argv[])
   const int tubular_segments = argc > 7 ? std::atoi(argv[7]) : 120;
   const int radial_segments  = argc > 8 ? std::atoi(argv[8]) : 60;
 
-  const double exc = argc > 9 ? std::atof(argv[9]) : 1; // excentricity
+  const double exc = argc > 9 ? std::atof(argv[9]) : 1; // eccentricity
 
   std::vector<Point> vertices;
   std::vector<Triangle> faces;
@@ -119,4 +119,4 @@ int main(int argc, char* argv[])
   CGAL::IO::write_polygon_soup(filename, vertices, faces);
 
   return 0;
-}
\ No newline at end of file
+}
diff --git a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_Bezier_curve_traits_2.h b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_Bezier_curve_traits_2.h
index 50545d324bc7..0710c6a1e19d 100644
--- a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_Bezier_curve_traits_2.h
+++ b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_Bezier_curve_traits_2.h
@@ -246,7 +246,7 @@ class Arr_Bezier_curve_traits_2 {
   }; /* end Arr_Bezier_curve_traits_2::X_monotone_curve_2 */
 
   /*! \class Trim_2
-   * A functor for triming curves.
+   * A functor for trimming curves.
    */
   class Trim_2 {
   public:
diff --git a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_circle_segment_traits_2.h b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_circle_segment_traits_2.h
index 17edad955b99..58df3ff2723b 100644
--- a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_circle_segment_traits_2.h
+++ b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_circle_segment_traits_2.h
@@ -311,7 +311,7 @@ class Arr_circle_segment_traits_2 {
   }; /* end Arr_circle_segment_traits_2::X_monotone_curve_2 */
 
   /*! \class Trim_2
-   * A functor for triming curves.
+   * A functor for trimming curves.
    */
   class Trim_2 {
   public:
diff --git a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_conic_traits_2.h b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_conic_traits_2.h
index b1d74135d5db..10f087d3b91c 100644
--- a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_conic_traits_2.h
+++ b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_conic_traits_2.h
@@ -439,7 +439,7 @@ class Arr_conic_traits_2 {
   };
 
   /*! \class Trim_2
-   * A functor for triming curves.
+   * A functor for trimming curves.
    */
   class Trim_2 {
   public:
diff --git a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_linear_traits_2.h b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_linear_traits_2.h
index ed1da381ee08..023599f14077 100644
--- a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_linear_traits_2.h
+++ b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_linear_traits_2.h
@@ -140,7 +140,7 @@ class Arr_linear_traits_2 {
   }; /* end Arr_linear_traits_2::X_monotone_curve_2 */
 
   /*! \class Trim_2
-   * A functor for triming curves.
+   * A functor for trimming curves.
    */
   class Trim_2 {
   public:
diff --git a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_polycurve_traits_2.h b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_polycurve_traits_2.h
index 27980cf4f88f..3960a7999e8e 100644
--- a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_polycurve_traits_2.h
+++ b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_polycurve_traits_2.h
@@ -225,7 +225,7 @@ class Arr_polycurve_traits_2 {
   }; /* end of Arr_polycurve_traits_2::Push_front_2 */
 
   /*! \class Trim_2
-   * A functor for triming curves.
+   * A functor for trimming curves.
    */
   class Trim_2 {
   public:
diff --git a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_segment_traits_2.h b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_segment_traits_2.h
index 39e4a19fb02f..c5195705bdf5 100644
--- a/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_segment_traits_2.h
+++ b/Arrangement_on_surface_2/doc/Arrangement_on_surface_2/CGAL/Arr_segment_traits_2.h
@@ -109,7 +109,7 @@ class Arr_segment_traits_2 : public Kernel {
   typedef X_monotone_curve_2                    Curve_2;
 
   /*! \class Trim_2
-   * A functor for triming curves.
+   * A functor for trimming curves.
    */
   class Trim_2 {
   public:
diff --git a/Polygon_mesh_processing/benchmark/Polygon_mesh_processing/meshes_intersections_comparison.cpp b/Polygon_mesh_processing/benchmark/Polygon_mesh_processing/meshes_intersections_comparison.cpp
index 98c6e42e0750..8c9256f591ac 100644
--- a/Polygon_mesh_processing/benchmark/Polygon_mesh_processing/meshes_intersections_comparison.cpp
+++ b/Polygon_mesh_processing/benchmark/Polygon_mesh_processing/meshes_intersections_comparison.cpp
@@ -65,7 +65,7 @@ void two_meshes_intersection(std::string fname1, std::string fname2){
   out.clear();
   PMP::experimental::AABB_two_trees_meshes_intersections(tm1, tm2, std::back_inserter(out), CGAL::parameters::concurrency_tag(CGAL::Parallel_tag()));
   std::cout << "number intersections: " << out.size() << std::endl;
-  std::cout << "Two tree AABB intersecton time: " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
+  std::cout << "Two tree AABB intersection time: " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
 
   t.stop(); rt.stop();
   t.reset(); rt.reset();
@@ -74,7 +74,7 @@ void two_meshes_intersection(std::string fname1, std::string fname2){
   out.clear();
   PMP::experimental::AABB_two_trees_meshes_intersections(tm1, tm2, std::back_inserter(out));
   std::cout << "number intersections: " << out.size() << std::endl;
-  std::cout << "Two tree AABB intersecton time (Sequential): " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
+  std::cout << "Two tree AABB intersection time (Sequential): " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
 
   t.stop(); rt.stop();
   t.reset(); rt.reset();
@@ -83,7 +83,7 @@ void two_meshes_intersection(std::string fname1, std::string fname2){
   out.clear();
   PMP::experimental::mixed_meshes_intersections(tm1, tm2, std::back_inserter(out), CGAL::parameters::concurrency_tag(CGAL::Parallel_tag()));
   std::cout << "number intersections: " << out.size() << std::endl;
-  std::cout << "Mixed intersecton time: " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
+  std::cout << "Mixed intersection time: " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
 
   t.stop(); rt.stop();
   t.reset(); rt.reset();
@@ -92,7 +92,7 @@ void two_meshes_intersection(std::string fname1, std::string fname2){
   out.clear();
   PMP::experimental::mixed_meshes_intersections(tm1, tm2, std::back_inserter(out));
   std::cout << "number intersections: " << out.size() << std::endl;
-  std::cout << "Mixed intersecton time (Sequential): " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
+  std::cout << "Mixed intersection time (Sequential): " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
 
   t.stop(); rt.stop();
   t.reset(); rt.reset();
@@ -101,7 +101,7 @@ void two_meshes_intersection(std::string fname1, std::string fname2){
   out.clear();
   PMP::AABB_meshes_intersections(tm1, tm2, std::back_inserter(out), CGAL::parameters::concurrency_tag(CGAL::Parallel_tag()));
   std::cout << "number intersections: " << out.size() << std::endl;
-  std::cout << "AABB intersecton time: " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
+  std::cout << "AABB intersection time: " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
   std::sort(out.begin(), out.end(), [](const auto &a, const auto &b){ return a.first<b.first || (a.first == b.first && a.second<b.second); });
 
   t.stop(); rt.stop();
@@ -111,7 +111,7 @@ void two_meshes_intersection(std::string fname1, std::string fname2){
   out.clear();
   PMP::AABB_meshes_intersections(tm1, tm2, std::back_inserter(out));
   std::cout << "number intersections: " << out.size() << std::endl;
-  std::cout << "AABB intersecton time (Sequential): " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
+  std::cout << "AABB intersection time (Sequential): " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
 
 
   t.stop(); rt.stop();
@@ -121,7 +121,7 @@ void two_meshes_intersection(std::string fname1, std::string fname2){
   out.clear();
   PMP::experimental::box_meshes_intersections(tm1, tm2, std::back_inserter(out), CGAL::parameters::concurrency_tag(CGAL::Parallel_tag()));
   std::cout << "number intersections: " << out.size() << std::endl;
-  std::cout << "Box intersecton time: " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
+  std::cout << "Box intersection time: " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
   std::sort(out.begin(), out.end(), [](const auto &a, const auto &b){ return a.first<b.first || (a.first == b.first && a.second<b.second); });
 
   t.stop(); rt.stop();
@@ -131,7 +131,7 @@ void two_meshes_intersection(std::string fname1, std::string fname2){
   out.clear();
   PMP::experimental::box_meshes_intersections(tm1, tm2, std::back_inserter(out));
   std::cout << "number intersections: " << out.size() << std::endl;
-  std::cout << "Box intersecton time (Sequential): " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
+  std::cout << "Box intersection time (Sequential): " << rt.time() << "sec (" << t.time() << "s all cpu)." << std::endl;
 
   t.stop(); rt.stop();
   t.reset(); rt.reset();