Which Nephew and Niece?

A nephew is the son of someone's brother or sister. A niece is the daughter of the person's brother or sister. To the nephew or niece, the person is their uncle or aunt.

Who is your nephew?

A nephew is the son of your sibling. This makes you the aunt or uncle of that nephew. While a mom, dad, sister, and brother are members of an immediate family, a nephew is part of your extended family because he's the son of a sibling.

Which one is niece or nephew?

A niece is female and a nephew is male. The term nibling has been used in place of the common, gender-specific terms in some specialist literature. As aunt/uncle and niece/nephew are separated by two generations they are an example of second-degree relationship and are 25% related if related by blood.