You would call your mother's sister an aunt.
cousin
Mom
Mausi (Aunt)
Our cousins are our mothers sisters son :)
خالة it's pronounced kaala
His relationship to you is brother-in-law.
Your mothers sister is your Aunt
Mothers sister is aunt and son is cousin so daughter wouldn't that be a niece
A gatecrasher.
You could call them as a brother/sister or as a cousin... If you're asking for yourself then good luck with that family.
Her sister was named Aga.
The child of your mother's sister is your first cousin.