fragment vs flake

fragment and flake both are nouns.

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

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

fragment (noun)	flake (noun)
a broken piece of a brittle artifact	a small fragment of something broken off from the whole
an incomplete piece	a person with an unusual or odd personality
a piece broken off or cut off of something else	a crystal of snow

fragment (verb)	flake (verb)
break or cause to break into pieces	come off in flakes or thin small pieces
	cover with flakes or as if with flakes
	form into flakes