preventive vs incumbrance

preventive and incumbrance both are nouns.

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

As nouns, preventive and incumbrance are synonyms defined as:

preventive and incumbrance: any obstruction that impedes or is burdensome

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

preventive (noun)	incumbrance (noun)
remedy that prevents or slows the course of an illness or disease	any obstruction that impedes or is burdensome
an agent or device intended to prevent conception	an onerous or difficult concern
any obstruction that impedes or is burdensome	a charge against property (as a lien or mortgage)

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