Your uncle (your Mother or Father's brother) is closer.
My great-grandma
great-grandma great-uncle great-grandpa great-aunt
my nephew had a baby...his mother is my sister...she is now a grandma which "should" make me a granduncle...and our mother is now a great grandma which "should" make her brother a great grand uncle.
its either your grandma or great aunt
It's your cousin. Lets say: Grandma Wilma has a brother Bill. Bill is your great Uncle. His daughter Joan is your parent's First Cousin and your First Cousin, once removed.
A niece or nephew is the child of an aunt's or uncle's brother or sister. So the parents of the aunt/uncle and of the niece's/nephew's parents are the same people - their grandparents. The grandmother of the aunt or uncle is the great grandparent of the niece or nephew.
Her great grandma.
Could be your Grandmother too if she is the mother of the brother or sister of your father or mother. If she is the mother of the spouse of a person married to the brother or sister of your father or mother, then there is really no relation.
If its Aunt by full blood then you related both same 50%.
The mother of one of your grandparents is your great-grandmother.The colloquial is "great-grandma" e.g. "Great-grandma Smith."
Great grandma in Punjabi is "ਗ੍ਰੈੱਟ ਗ੍ਰੈਂਡਮਾ" (Great GrandMa), pronounced as "grait grendma" in English.
Your grandma's brother is your parents' uncle, so he is your great uncle. if he got married and had a son, then your parents now have a cousin. People with the same grandparents are first cousins. People with the same great grandparents are second cousins. This man is one generation away from you, so he is your second cousin, once removed.