sex activity vs coming

sex activity and coming both are nouns.

Word	Noun	Adjective	Verb	Adverb
sex activity	Yes	No	No	No
coming	Yes	Yes	No	No

sex activity (noun)	coming (noun)
activities associated with sexual intercourse	the moment of most intense pleasure in sexual intercourse
	arrival that has been awaited (especially of something momentous)
	the act of drawing spatially closer to something
	the temporal property of becoming nearer in time

sex activity (adjective)	coming (adjective)
	of the relatively near future