Your grandmother's sister is your great aunt.
Your grandmother's sister is your great-aunt.
Your grandmother's sister's children are your first cousins, once removed.
There is no word in the English language for a relationship between grandmothers of related grandchildren
Yes, your great grandmother's sister is your great-great aunt. Your great aunt is your grandmother's sister.
If your great great grandmothers were sisters, your common ancestors are your great great great grandparents. That makes you 4th cousins.
Marrie Carrie was named after her grandmother and her grandmothers sister (great aunt)
Hopefully, women who are grandmothers of the same children are friends, but in western culture they are not otherwise related. They are the mothers of the parents of the children
You are not related as you do not share a common ancestor.
First cousins once removed. They would be your parent's cousin.
Your wife's sister is your sister-in-law. You are not related to your wife's sister's husband.
Your brother's wife is your sister-in-law, but her sister is not related to you.
None.Your daughter's husband is your son-in-law and his sister is your daughter's sister-in-law. But the English language does not consider you to be related to your daughter's husband's sister