preventative vs preventive

preventative and preventive both are nouns.

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

As adjectives, preventative and preventive are synonyms defined as:

As adjectives, preventative and preventive are synonyms defined as:

preventative and preventive: preventing or contributing to the prevention of disease

Other synonyms of preventative include prophylactic.

As nouns, preventative and preventive are synonyms defined as:

preventative and preventive: remedy that prevents or slows the course of an illness or disease

Other synonyms of preventative include prophylactic.

As nouns, preventative and preventive are synonyms defined as:

preventative and preventive: an agent or device intended to prevent conception

Other synonyms of preventative include birth control device, contraceptive, contraceptive device, prophylactic device.

As nouns, preventative and preventive are synonyms defined as:

preventative and preventive: any obstruction that impedes or is burdensome

Other synonyms of preventative include encumbrance, hinderance, hindrance, hitch, incumbrance, interference.

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

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