fleck vs speck

fleck and speck both are nouns.

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

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

fleck (noun)	speck (noun)
a small contrasting part of something	a very small spot
a small fragment of something broken off from the whole	a slight but appreciable amount
	(nontechnical usage) a tiny piece of anything

fleck (verb)	speck (verb)
make a spot or mark onto	produce specks in or on