stimulate vs sex activity

stimulate is not a noun while sex activity is a noun.

Word	Noun	Adjective	Verb	Adverb
stimulate	No	No	Yes	No
sex activity	Yes	No	No	No

stimulate (noun)	sex activity (noun)
	activities associated with sexual intercourse

stimulate (verb)	sex activity (verb)
cause to be alert and energetic
act as a stimulant
provide the needed stimulus for
cause to do; cause to act in a specified manner
cause to occur rapidly
stir the feelings, emotions, or peace of
stir feelings in