sexual activity vs bush

sexual activity and bush both are nouns.

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

sexual activity (noun)	bush (noun)
activities associated with sexual intercourse	hair growing in the pubic area
	dense vegetation consisting of stunted trees or bushes
	a large wilderness area
	a low woody perennial plant usually having several major stems

sexual activity (adjective)	bush (adjective)
	not of the highest quality or sophistication

sexual activity (verb)	bush (verb)
	provide with a bushing