I don’t expect to get one definite answer here, but Google can’t give me one either. Some websites say they’re your second cousin, and others say they’re your first cousin once removed. I’m trying to figure out some family tree stuff so I need to know the difference between the (groups of) terms.
Ah so second cousins are in the same generation. I have two first cousins twice removed (children of grandparents sibling) who I always though were second cousins. Now I get the term. If either of them have children, those would be second cousins.