Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

an eponym is a person's name that is used to name something else.
eponym

language death is when a language stops being used as a first language (also called mother language or native language) and as a second language, which it then becomes an extinct language.
language death

the south african communist party (sacp) is a communist party in south africa.

south african communist party