prophylactic vs protective

prophylactic is a noun but protective is not a noun.

Word	Noun	Adjective	Verb	Adverb
prophylactic	Yes	Yes	No	No
protective	No	Yes	No	No

prophylactic (noun)	protective (noun)
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

prophylactic (adjective)	protective (adjective)
preventing or contributing to the prevention of disease	intended or adapted to afford protection of some kind
warding off	showing care
capable of preventing conception or impregnation	(usually followed by `of') solicitously caring or mindful