if it is a boy it is a cousin brother and if it is a girl it is a cousin sister
Your child is your aunt's great nephew (if he is a boy) or great niece (if she is a girl). Your aunt is your child's great aunt.
You father's aunt is your great aunt.
Great Aunt
Grandpa
In English, the wife of your brother (elder or younger) is your sister-in-law. If you have a child, she is your child's aunt.
A girl would be your niece and a boy your nephew.
not unless your the child's owner or as i call it rent.
Your uncle/aunt's son/daughter is an adult and you are still small, your uncle/aunt's daughter had a child, and that child will call you uncle. Uncles/aunts are your dad/mom's siblings.
Your aunt's child is your first cousin.
I call my grandma's aunt, Great Aunt. Maybe that's what you call her, but she is of course your great-great-aunt.
Your sister's daughter is your niece. You are her aunt if you are female, or her uncle if you are male.
Nothing. They aren't really part of your family to warrant a title such as nephew or niece or the like. The child would call your son his/her uncle simply because he is married to that child's aunt.
The same reason that it is a mother when it is her child and aunt for her sister's children.
To your child, she would be a great great great aunt. If she is your mother's great aunt, that means she is your great great aunt, making her a great great great aunt to your child. I would just stick to calling her auntie or Aunt ______. :)
For clarity. let's call your grandmother's aunt "the aunt". Sequence of relationship: (1) The aunt's child and your grandmother are 1st cousins (2) The aunt's grandchild and one of your parents are 2nd cousins (3) The aunt's great grandchild and you are 3rd cousins
Your parent's aunt is your great aunt. Your great aunt's daughter's child is her grand child. You and your great aunt's grandchild are second cousins.