Nonperson and Somebody

Nonperson noun - A person regarded as nonexistent and having no rights; a person whose existence is systematically ignored (especially for ideological or political reasons).

Somebody and nonperson are semantically related. In some cases you can use "Somebody" instead a noun "Nonperson".

Somebody noun - A person who is widely known and usually much talked about.

Nonperson and somebody are semantically related. Sometimes you can replace term "Nonperson" with "Somebody", this nouns are similar.