sexual activity vs provoke

sexual activity is a noun but provoke is not a noun.

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

sexual activity (noun)	provoke (noun)
activities associated with sexual intercourse

sexual activity (verb)	provoke (verb)
	provide the needed stimulus for
	evoke or provoke to appear or occur
	call forth (emotions, feelings, and responses)
	annoy continually or chronically