fragmentise vs sliver

fragmentise is not a noun while sliver is a noun.

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

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

Other hyponyms of fragmentise include atomise, atomize, bray, comminute, crunch, grind, mash, pound, sunder, splinter, rag, crumb, brecciate, crush, grate, grind.

fragmentise (noun)	sliver (noun)
	a thin fragment or slice (especially of wood) that has been shaved from something
	a small thin sharp bit of wood or glass or metal

fragmentise (verb)	sliver (verb)
break or cause to break into pieces	break up into splinters or slivers
	form into slivers
	divide into slivers or splinters