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.
His nephew
Yes, niece and nephew-in-law are valid terms.
"Sobrino" in Spanish means nephew or niece, depending on the gender of the relative.
Its either u or a distant relative.
niece, nephew, or relative?
Brother, uncle, father, grandfather, nephew.
Napoleon's son was briefly Napoleon II. His nephew was Napoleon III.
The masculine equivalent of "niece" is "nephew." A nephew is the son of one's sibling or sibling-in-law. While "niece" refers specifically to a female relative, "nephew" serves the same familial role but for males.
In English there are no masculine or feminine forms. English uses gender specific nouns for a male or a female. The noun nephew is a word for a male relative; the noun niece is a word for a female relative.
The feminine opposite of nephew is niece.
Your grandfather's nephew's daughter is your second cousin because you both have a common ancestor in at least one of your grandfather's parents.
You and your half-sisters have one parent in common , so he's still your nephew.