fragmentize vs crumb

fragmentize is not a noun while crumb is a noun.

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

As verbs, crumb is a hyponym of fragmentize; that is, crumb 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, sliver, splinter, rag, brecciate, crush, grate, grind.

fragmentize (noun)	crumb (noun)
	small piece of e.g. bread or cake
	a person who is deemed to be despicable or contemptible
	a very small quantity of something

fragmentize (verb)	crumb (verb)
break or cause to break into pieces	remove crumbs from
	break into crumbs
	coat with bread crumbs