fragmentize vs sliver

fragmentize is not a noun while sliver is a noun.

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

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

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

fragmentize (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

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