I thought I don't no
If they are biological brothers/sisters then they either have the same mother OR fatheror have both the same mother AND father.If they are brother and sister by law then they're brother-in-law or sister-in-law brother-in-law if that person is male and is the brother of the person your biological brother or sister marriedsister-in-law if that person is female and is the sister of the person your biological brother or sister marriedIf the biological brother has a romantic relationship with the biological sister then their relationship will be called incest.
its your sister
The daughter of a person's brother or sister is that person's Niece The son of a person's brother or sister is that person's nephew
A sibling is any person who is either brother or sister to that person. Half siblings and step-siblings are the same, are the same, but half sibling is a half-brother or half sister, and a step sibling is a step brother or step sister. No matter what your age, any brother or sister is considered a sibling.
Your brother-in-law is either the husband of your sister or the brother of your spouse.Where your brother-in-law is the husband of your sister, there is no relationship name in the English language to describe his brother's relationship to you. However, in that situation your brother-in-law's brother is your sister'sbrother-in-law.Where your brother-in-law is the brother of your spouse, his brother is also your brother-in-law.
siblings are a person's brother or sister
No. Your husband's brother-in-law would be your brother or the husband of your husband's sister. Your sister is your husband's sister-in-law. Your sister's husband is your brother-in-law but the English language has no term to describe a relationship between your husband and your sister's husband. In everyday English usage, however, your sister's husband is referred to as your husband's brother-in-law, yes. But it isn't exactly correct.
If two people are brother and sister and the sister has a son, then: her brother is her son's uncle, and her son is her brother's nephew.
It means that when you have a friendship, and you two are VERY close people would (or the other person) declare you his as if you were a brother, or sister to him (vice-verse [sister declare you as her brother, or sister]).
Your sister-in-law is either the wife of your brother or the sister of your spouse. Your brother-in-law is either the husband of your sister or the brother of your spouse. So your brother-in-law's wife is either your sister or is not related to you. Some people incorrectly refer to a brother-in-law's wife as a sister-in-law.
It is your sister's or brother's son, your adopted sister's or brother's son or your half sister's or brother's son. That would make you an aunt or uncle.
blood of ties. A brother or sister.