"Uncle" is your father's brother.
Your father's brother is your uncle.
Your father's brother's son is your first cousin.
what i call my father elder brother's wife
Your father's brother is your uncle. His wife is your aunt.
Your father's brother's son is your first cousin.
In Hindi, you would call your father's younger brother "chacha."
Half-Brother.
Your father's brother is your uncle.
Your uncle.
Your father's brother is your uncle; you are his niece (if you are a girl) or his nephew (if you are a boy).
to you, she is your first cousin. to your father, she is his niece.