visualiser vs percipient

visualiser and percipient both are nouns.

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

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

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

Other hypernyms of visualiser include beholder, observer, perceiver.

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

visualiser (adjective)	percipient (adjective)
	characterized by ease and quickness in perceiving