You are your uncle's niece. You and your uncle's children are first cousins to each other.
Your children and your niece are first cousins to each other.
Your great uncle's niece could be your mother, or your aunt. It is also possible that she is not related to you at all, as you might not share a common ancestor.
Your father's brother is your uncle. You are his niece (if you are female) or his nephew (if you are male).
Your aunt is your child's Great Aunt, so your child is her great niece or great nephew.
You are Great Aunt to your niece's child. The child is your great niece or great nephew.
You are great great aunt to your niece's grandchild. Your children and your niece's grandchild are first cousins, twice removed.
uncles aunts sholud both spend an equal amout of time together depending on their relationship
They are first cousins once removed. Your niece's children and your grandchildren will then be 2nd cousins.
(1) Your niece is the daughter of your sibling (2) Your niece and your children are 1st cousins (3) Your grandchildren and your niece's children are 2nd cousins (4) Your g'children and your niece's g'children are 2nd cousins once removed
Your fathers brothers are your uncles. You are their nephew, or niece.
your second niece or nephew
your second niece or nephew