sexual activity vs hooker

sexual activity and hooker both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual activity	Yes	No	No	No
hooker	Yes	No	No	No

sexual activity (noun)	hooker (noun)
activities associated with sexual intercourse	a prostitute who attracts customers by walking the streets
	(rugby) the player in the middle of the front row of the scrum who tries to capture the ball with the foot
	a golfer whose shots typically curve left (for right-handed golfers)