sadist vs perv

sadist and perv both are nouns.

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

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

sadist: someone who obtains pleasure from inflicting pain on others
perv: a person whose behavior deviates from what is acceptable especially in sexual behavior

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

sadist (noun)	perv (noun)
someone who obtains pleasure from inflicting pain on others	a person whose behavior deviates from what is acceptable especially in sexual behavior

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