plaque vs fleck

plaque and fleck both are nouns.

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

As nouns, fleck is a hypernym of plaque; that is, fleck is a word with a broader meaning than plaque:

Other hypernyms of plaque include dapple, maculation, patch, speckle, spot.

plaque (noun)	fleck (noun)
a memorial made of brass	a small contrasting part of something
(pathology) a small abnormal patch on or inside the body	a small fragment of something broken off from the whole

plaque (verb)	fleck (verb)
	make a spot or mark onto