Your aunt is the sister of either your mother or your father. Your aunt's sister is either:
First cousins, twice removed. Aunts daughter is your cousin. Aunts daughters daughter is cousin once removed Aunts daughters daughters daughter is cousin twice removed.
The grandchildren of any of your great uncles and great aunts are your second cousins.
Your aunts and uncles are the sisters and brothers of your parents.
Your sister's daughter would be considered your niece.
The relationship to you would be your cousin !
Your aunt's daughter is your first cousin.
No. This is a religious relationship, not a family relationship.
Your grandmother's sisters are your Great Aunts.
If you are the daughter or son of your mother then ALL her sisters are your aunts no matter what their age.
The relation of the mother;s sister to daughter is niece-aunts.
First cousins once removed.
Your great grandparents' brothers and sisters are your great great aunts and uncles.