Your nephew's granddaughter is your great great niece. Depending on whether you are male or female, you are that child's great great uncle or great great aunt.
The half-sister of your granddaughter's half-sister is your granddaughter, or is not related to you.
Your great uncle's granddaughter is your second cousin.
Fili and Kili are his nephews.
they are cousins
Yes, they are his nephews.
They are your nieces and nephews.
If your great uncle married into your family some of his nieces and nephews are your aunts or uncles (or your parent) and some are not related to you at all.
Some of your granddaughter's first cousins are also your grandchildren, others are not related to you at all.
yes, they are his nephews..
. Your uncle is one of your parents brother. His son or daughter is your cousin. The granddaughter is a second cousin.
Your her great great aunt!
If your great uncle is the brother of one of your grandparents, his wife is your great aunt but their nephews and nieces onher side are not related to you. Those nieces and nephews (and their children the great nieces and great nephews) have no ancestor who is also one of yourancestors.