lecher vs perv

lecher and perv both are nouns.

Word	Noun	Adjective	Verb	Adverb
lecher	Yes	No	No	No
perv	Yes	No	Yes	No

As nouns, perv is a hypernym of lecher; that is, perv is a word with a broader meaning than lecher:

lecher: man with strong sexual desires
perv: a person whose behavior deviates from what is acceptable especially in sexual behavior

Other hypernyms of lecher include degenerate, deviant, deviate, perve, pervert.

lecher (noun)	perv (noun)
man with strong sexual desires	a person whose behavior deviates from what is acceptable especially in sexual behavior

lecher (verb)	perv (verb)
	look at with amorous intentions