sexual activity vs apogee

sexual activity and apogee both are nouns.

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

sexual activity (noun)	apogee (noun)
activities associated with sexual intercourse	apoapsis in Earth orbit; the point in its orbit where a satellite is at the greatest distance from the Earth
	a final climactic stage