sex activity vs prophylactic

sex activity and prophylactic both are nouns.

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

sex activity (noun)	prophylactic (noun)
activities associated with sexual intercourse	contraceptive device consisting of a sheath of thin rubber or latex that is worn over the penis during intercourse
	remedy that prevents or slows the course of an illness or disease

sex activity (adjective)	prophylactic (adjective)
	preventing or contributing to the prevention of disease
	warding off
	capable of preventing conception or impregnation