spermicide vs preventative

spermicide and preventative both are nouns.

Word	Noun	Adjective	Verb	Adverb
spermicide	Yes	No	No	No
preventative	Yes	Yes	No	No

As nouns, preventative is a hypernym of spermicide; that is, preventative is a word with a broader meaning than spermicide:

spermicide (noun)	preventative (noun)
a contraceptive agent that kills spermatozoa	remedy that prevents or slows the course of an illness or disease
	an agent or device intended to prevent conception
	any obstruction that impedes or is burdensome

spermicide (adjective)	preventative (adjective)
	tending to prevent or hinder
	preventing or contributing to the prevention of disease