Black person and Nigra

Black person noun - A person with dark skin who comes from Africa (or whose ancestors came from Africa).

Nigra and black person are semantically related. In some cases you can replace term "Nigra" with "Black person", this terms are similar.

Nigra noun - (ethnic slur) extremely offensive name for a Black person.

Black person and nigra are semantically related. You can use "Black person" instead a noun "Nigra".