Differences between Pointers, Offsets, and Addys

Can anyone tell me the difference between Addys, pointers and offsets and how can you tell them apart?

An addy is a Address (ex: ChangeWeaponAnimRatio is an address)

I am not sure about the pointers but I think this is the definition of pointers:
Pointers "points" the exact location of the Offsets/addy that we are editing.

Offset = 0x7F8 something like that

Oh, so all that you need for your code is the Offset value and the correct loops?