splinter vs fleck

splinter and fleck both are nouns.

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

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

Other hypernyms of splinter include bit, chip, flake, scrap.

splinter (noun)	fleck (noun)
a small thin sharp bit of wood or glass or metal	a small contrasting part of something
	a small fragment of something broken off from the whole

splinter (verb)	fleck (verb)
break up into splinters or slivers	make a spot or mark onto
withdraw from an organization or communion
divide into slivers or splinters