There is 2 answers your mothers brothers children or your dads sister;"s children
Your cousin's cousin could either be your cousin or no relation at all.
He is of relation as a cousin-in-law.
Your mother's cousin's son who was not adopted would be your second cousin (step-cousin.)
Well, your cousin's brother is also your cousin, and a cousin's son is also your cousin.
Your second cousin.
No, not techenocly maybe if it was your moms close cousin's daughter but not your moms far cousins daughter.
Your cousin. You are that person's second cousin.
Second cousin
They are your cousin-in-law.
Cousin in Law
Your cousin-in-law.
still your cousin