Mothers sister is aunt and son is cousin so daughter wouldn't that be a niece
Your mother's sister's son is your first cousin. In routine conversation, however, you would address him by name, not as "cousin."
He is your cousin
um your cousin
Step cousin for the most part
If she is your sisters daughter then she is your neice :)
She is your niece.
niece
Niece.
Neice
She is your niece.
your Neice
Your niece
Your sister's daughter is your niece, her granddaughter is your "great niece"... or you could just call her by name.
Your 2nd cousin
Cousin - In - Law
your mums boyfriends sisters brothers dogs owners mums uncle