visualiser vs perceiver

visualiser and perceiver both are nouns.

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

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

visualiser: one whose prevailing mental imagery is visual
perceiver: a person who becomes aware (of things or events) through the senses

Other hypernyms of visualiser include beholder, observer, percipient.

visualiser (noun)	perceiver (noun)
one whose prevailing mental imagery is visual	a person who becomes aware (of things or events) through the senses