voyeur vs looker

voyeur and looker both are nouns.

Word	Noun	Adjective	Verb	Adverb
voyeur	Yes	No	No	No
looker	Yes	No	No	No

As nouns, looker is a hypernym of voyeur; that is, looker is a word with a broader meaning than voyeur:

voyeur: a viewer who enjoys seeing the sex acts or sex organs of others
looker: a close observer; someone who looks at something (such as an exhibition of some kind)

Other hypernyms of voyeur include spectator, viewer, watcher, witness.

voyeur (noun)	looker (noun)
a viewer who enjoys seeing the sex acts or sex organs of others	a very attractive or seductive looking woman
	a close observer; someone who looks at something (such as an exhibition of some kind)