Please explain how first, second, third and so on cousins work?

Question

Also what does ‘once and twice removed’ cousins work in that context?

In: 14

Answer 1

So I have a daughter. My first cousin has a son. Me and my cousin are first cousins. My daughter and my cousin’s son are second cousins. My cousin’s son is my first cousin once removed. So what am I to him? First cousin once removed (going down from my cousin) or second cousin once removed (going up from my daughter)?