fleck vs defile

fleck and defile both are nouns.

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

As verbs, defile is a hyponym of fleck; that is, defile is a word with a more specific, narrower meaning than fleck:

fleck: make a spot or mark onto
defile: make dirty or spotty, as by exposure to air; also used metaphorically

Other hyponyms of fleck include splotch, maculate, stain, sully, tarnish, bespeckle, speckle, bespatter, spatter.

fleck (noun)	defile (noun)
a small contrasting part of something	a narrow pass (especially one between mountains)
a small fragment of something broken off from the whole

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