sexual activity vs summit

sexual activity and summit both are nouns.

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

sexual activity (noun)	summit (noun)
activities associated with sexual intercourse	a meeting of heads of governments
	the top or extreme point of something (usually a mountain or hill)
	the highest level or degree attainable; the highest stage of development

sexual activity (verb)	summit (verb)
	reach the summit (of a mountain)