sex vs jerking off

sex and jerking off both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex	Yes	No	Yes	No
jerking off	Yes	No	No	No

sex (noun)	jerking off (noun)
activities associated with sexual intercourse	slang for masturbation
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)	jerking off (verb)
tell the sex (of young chickens)
to evoke sexual feelings