Half-Brother.
Your brother's father isyour father, unless you are half-brothers. In that case, your brother's father might be your stepfather
The son of your half-brother's father is not related to you when the father is not your father.
He is still technically your half-brother. But if you get along well, why would it ever matter? It is much easier not to differentiate and to call him your brother
"Uncle" is your father's brother.
Your father's brother is your uncle.
Your maternal half-brother is a brother who has the same mother as you but not the same father.
Your maternal half-brother is a brother who has the same mother as you but not the same father.
Your father's brother's son is your first cousin.
what i call my father elder brother's wife
A half brother means that they either had the same father or mother as the rest of the siblings, but a different father or mother making them a half brother. You Grandmother's half brother would be your great uncle.
In most cases, your brother's father is also your father. If your brother is actually your half-brother, and you have the same mother, then your brother's father is either your stepfather or is not related to you at all.
Your father's brother is your uncle. His wife is your aunt.