receiver vs tennis player

receiver and tennis player both are nouns.

Word	Noun	Adjective	Verb	Adverb
receiver	Yes	No	No	No
tennis player	Yes	No	No	No

As nouns, tennis player is a hypernym of receiver; that is, tennis player is a word with a broader meaning than receiver:

receiver (noun)	tennis player (noun)
set that receives radio or tv signals	an athlete who plays tennis
earphone that converts electrical signals into sounds
a person who receives something
(law) a person (usually appointed by a court of law) who liquidates assets or preserves them for the benefit of affected parties
a football player who catches (or is supposed to catch) a forward pass
the tennis player who receives the serve