titillating vs sexual activity

titillating is not a noun while sexual activity is a noun.

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

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

titillating (adjective)	sexual activity (adjective)
giving sexual pleasure; sexually arousing
pleasantly and superficially exciting
exciting by touching lightly so as to cause laughter or twitching movements