sex vs perv

sex and perv both are nouns.

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

sex (noun)	perv (noun)
activities associated with sexual intercourse	a person whose behavior deviates from what is acceptable especially in sexual behavior
the properties that distinguish organisms on the basis of their reproductive roles
all of the feelings resulting from the urge to gratify sexual impulses
either of the two categories (male or female) into which most organisms are divided

sex (verb)	perv (verb)
tell the sex (of young chickens)	look at with amorous intentions
to evoke sexual feelings