tarnish vs defile

tarnish and defile both are nouns.

Word	Noun	Adjective	Verb	Adverb
tarnish	Yes	No	Yes	No
defile	Yes	No	Yes	No

As verbs, tarnish and defile are synonyms defined as:

tarnish and defile: make dirty or spotty, as by exposure to air; also used metaphorically

Other synonyms of tarnish include maculate, stain, sully.

tarnish (noun)	defile (noun)
discoloration of metal surface caused by oxidation	a narrow pass (especially one between mountains)

tarnish (verb)	defile (verb)
make dirty or spotty, as by exposure to air; also used metaphorically	spot, stain, or pollute
	make dirty or spotty, as by exposure to air; also used metaphorically
	place under suspicion or cast doubt upon