You and the son of your uncle are first cousins to each other.
Your granpa's brother's son's son is your 2nd cousin.
Your brother-in-law's son is your nephew
Your Step-brother. If he isn't your brother but he is your father's son, he's you.
Your half-brother's daughter is your niece. Your niece and your son are first cousins to each other.
Well, your cousin's brother is also your cousin, and a cousin's son is also your cousin.
cousin
jew face
Your brother's son or daughter is your nephew or niece respectively.
There is no genealogical relationship. He is just your son-in-law's brother.
Your son would be the uncle of his brother's son.
The sister's son would be the nephew of her brother.
God Brother