従兄弟違い
They are cousins.
half-brothers―half-sisters
The brothers are all alive.
また従兄弟
They are loving brothers.
I have many brothers and sisters―(と言うよりも普通)―I am one of a large family―I belong to a large family.
They are half-brothers―half-sisters.
the relationship of being a cousin
They are a consanguineous couple.
They are cousins.
The brothers are at variance with each other.
half-brothers
Do you have any brothers?
half-brothers―half-sisters