flake vs sliver

flake and sliver both are nouns.

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

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

Other hyponyms of flake include matchwood, exfoliation, scale, scurf, scurf, splinter.

flake (noun)	sliver (noun)
a small fragment of something broken off from the whole	a thin fragment or slice (especially of wood) that has been shaved from something
a person with an unusual or odd personality	a small thin sharp bit of wood or glass or metal
a crystal of snow

flake (verb)	sliver (verb)
come off in flakes or thin small pieces	break up into splinters or slivers
cover with flakes or as if with flakes	form into slivers
form into flakes	divide into slivers or splinters