The brother of your brother is also your brother. Brothers are males who have the same parents. If they have only one parent in common, because there was a divorce and remarriage before one of them was born, then they may be called "half-brothers."
Your brother's daughters are your nieces
Brother-in-law
Brothers
Because ,in some cases, brothers were fighting brothers
Your mother's brother-in-law is your uncle.
Your sister-in-law.
We call "Mami" to moms brother's wife.
Your brothers child is either a nephew or a niece to you.
The daughter of your brother is your niece.
Your brother's wife would think of you as her brother-in-law and when wanting to get your attention will simply call you by your first name. If she is introducing you to someone she would say, 'This is my brother-in-law ____.'
" Ikka "
Your brothers children are your nephews (boys) and nieces (girls).