fleck vs fragment

fleck and fragment both are nouns.

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

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

fleck (noun)	fragment (noun)
a small contrasting part of something	a broken piece of a brittle artifact
a small fragment of something broken off from the whole	an incomplete piece
	a piece broken off or cut off of something else

fleck (verb)	fragment (verb)
make a spot or mark onto	break or cause to break into pieces