Your wife's brother would be called "brother-in-law".
Your wife's brother is your brother-in-law.
My wifes brother in law!
Your grandmother's brother's wife is your great aunt.
would it be a brother in law? not sure about this one! Is it your husband/wifes daughters brother?
would it be a brother in law? not sure about this one! Is it your husband/wifes daughters brother?
You would call your wife's elder brother's wife "sister-in-law."
Your father's brother's son is your first cousin. The English language does not have a name for the wife of a cousin. You would simply refer to her as "my cousin's wife."
Your sister in law is your husband's sister or your brother's wife.
i believe that your brother's wife's sister is also your sister in law No, I think not! But as you seem to have the hots for your brother's wife's sister, you can call her "honey" if you like.
Your half-brother...
Yes
I think you mean 'Otosan'. This means 'Dad' or 'Father'. I get the impression from my study that wifes sometimes call their husband 'Otosan'.