unconventional vs sexual activity

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

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

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

unconventional (adjective)	sexual activity (adjective)
not conforming to accepted rules or standards
not conventional or conformist
not conforming to legality, moral law, or social convention