sexual activity vs tiptop

sexual activity and tiptop both are nouns.

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

sexual activity (noun)	tiptop (noun)
activities associated with sexual intercourse	the extreme top or summit
	the highest level or degree attainable; the highest stage of development

sexual activity (adjective)	tiptop (adjective)
	of the highest quality