spermatocide vs preventive

spermatocide and preventive both are nouns.

Word	Noun	Adjective	Verb	Adverb
spermatocide	Yes	No	No	No
preventive	Yes	Yes	No	No

As nouns, preventive is a hypernym of spermatocide; that is, preventive is a word with a broader meaning than spermatocide:

spermatocide (noun)	preventive (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

spermatocide (adjective)	preventive (adjective)
	tending to prevent or hinder
	preventing or contributing to the prevention of disease