You ought to have mentioned that pointers of the latter type are quite rare in C. A mention of const pointer practically always means a pointer-to-const: a pointer you can't write through. Often you can still "re-bind" such pointer to another object – in both ways the polar opposite of JS const.

Of course, in C++ there are const references as well, and in this case const also means you can't modify the referenced object (in any case in C++ you can never re-bind a reference).