Twins, or a interesting family situation
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Sister from another MR ..Or Brother from another Mother;DD ( distant twins ) or earth twins.
Your sister's husband is your brother-in-law. It does not matter whether you speak of your elder sister or another sister, the same term is used for the husband of any one of your sisters.
siblings yaknow like your sister or your brother?
No. They are the same as any brother or sister but they are born at the same time.
... will share a birthdate.
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.
Sister-in-law. same as your brother's wife.
the father of his sister and brother is Jermy bieber him Justin and his little brother and sister have the same dad
Your wife's brother is your brother-in-law. Your brother-in-law's wife is not related to you, and the same applies to her sister.
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.
A brother and a sister, both being children of the same parents, are siblings.
In English, your brother's daughter is called your niece. Your sister's daughter is also called your niece.You are her aunt if you are a woman or her uncleif you are a man.