spectator vs perceiver

spectator and perceiver both are nouns.

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

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

spectator: a close observer; someone who looks at something (such as an exhibition of some kind)
perceiver: a person who becomes aware (of things or events) through the senses

Other hypernyms of spectator include beholder, observer, percipient.

spectator (noun)	perceiver (noun)
a woman's pump with medium heel; usually in contrasting colors for toe and heel	a person who becomes aware (of things or events) through the senses
a close observer; someone who looks at something (such as an exhibition of some kind)