turn on vs sexual activity

turn on is not a noun while sexual activity is a noun.

Word	Noun	Adjective	Verb	Adverb
turn on	No	No	Yes	No
sexual activity	Yes	No	No	No

turn on (noun)	sexual activity (noun)
	activities associated with sexual intercourse

turn on (verb)	sexual activity (verb)
become hostile towards
get high, stoned, or drugged
cause to operate by flipping a switch
to evoke sexual feelings
cause to be agitated, excited, or roused
produce suddenly or automatically
be contingent on