defile vs tarnish

defile and tarnish both are nouns.

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

As verbs, defile and tarnish are synonyms defined as:

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

Other synonyms of defile include maculate, stain, sully.

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

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