listener vs perceiver

listener and perceiver both are nouns.

Word	Noun	Adjective	Verb	Adverb
listener	Yes	No	No	No
perceiver	Yes	No	No	No

As nouns, perceiver is a hypernym of listener; that is, perceiver is a word with a broader meaning than listener:

listener: someone who listens attentively
perceiver: a person who becomes aware (of things or events) through the senses

Other hypernyms of listener include beholder, observer, percipient.

listener (noun)	perceiver (noun)
someone who listens attentively	a person who becomes aware (of things or events) through the senses