We would infact, cll our sisters son your nephew and they would call you either auntie or uncle depending on your sex.
cousin brother
You do you call your sons's son your "grandson" !
Probably your niece-in-law.
Call him whatever his name is.If your uncle is the brother of one of your parents, then his wife's sister and her son are not related to you.If your uncle is the husband of one of your parents' sisters, then his wife's sister may be:your mother, in which case the son is you or your brother, oryour aunt (sister of both your parent and your uncle's wife), in which case the son is your first cousin.
The haudenosaunee call there plants crops and beans also squash that they called three sisters
If your sister had a son, then he is your nephew.
nephew
Your cousin.
Our cousins are our mothers sisters son :)
My sister's son is my nephew.
cousin brother
Niece and nephew
My sister's son is my nephew.
Your sisters son is your nephew.
You would call your sister's son your nefu and her daughter neice.