The English language does not use the phrase "cousin brother."
The brother of your cousin is also your cousin.
This person would generally be referred to as your cousin..
Your brother's cousin is also your cousin.
There is no relationship called "god brother" so you are not related to a cousin of such a person.
Your father's sister is you aunt. Her son is your first cousin. Her son's daughter (her granddaughter) is your first cousin, once removed.
He is your mother's first cousin and your first cousin once removed.
Your cousin's brother is also your cousin, but the cousin's wife is not related to you.
Your mother's brother's son would be her nephew and your cousin.
Your father's brother's son (or daughter) is your first cousin, and is usually called by name.
Well, your cousin's brother is also your cousin, and a cousin's son is also your cousin.
Your mother's brother is your uncle. Your uncle's daughter is your first cousin. Any child of your first cousin is your first cousin, once removed.
Your wife's mother's brother' son is your wife's first cousin, but is not rtealted to you.
The brother of your wife's cousin is also her cousin. You can call either of them "my wife's cousin." You are not related to them.