deterrent vs preventative

deterrent and preventative both are nouns.

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

deterrent (noun)	preventative (noun)
something immaterial that interferes with or delays action or progress	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

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