incumbrance vs preventive

incumbrance and preventive both are nouns.

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

As nouns, incumbrance and preventive are synonyms defined as:

incumbrance and preventive: any obstruction that impedes or is burdensome

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

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

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