pass receiver vs footballer

pass receiver and footballer both are nouns.

Word	Noun	Adjective	Verb	Adverb
pass receiver	Yes	No	No	No
footballer	Yes	No	No	No

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

pass receiver: a football player who catches (or is supposed to catch) a forward pass
footballer: an athlete who plays American football

Other hypernyms of pass receiver include football player.

pass receiver (noun)	footballer (noun)
a football player who catches (or is supposed to catch) a forward pass	an athlete who plays American football