Polymorphism*

Ad hoc

Another name for function or operator overloading.

Parametric

When a function or data type is generic and handle values of different types in the same; for instance, List<T> – a list with elements of an arbitrary type. The specific type in question is often given as a parameter, hence the name.

Subtype

When an object belonging to a subtype can be used in a place where the supertype is expected (as with classes and inheritance in object-oriented programming).

[Wikipedia]