sliver vs fragmentize

sliver is a noun but fragmentize is not a noun.

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

As verbs, fragmentize is a hypernym of sliver; that is, fragmentize is a word with a broader meaning than sliver:

Other hypernyms of sliver include break up, fragment, fragmentise.

sliver (noun)	fragmentize (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

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