crackle vs crump

crackle is a noun but crump is not a noun.

Word	Noun	Adjective	Verb	Adverb
crackle	Yes	Yes	Yes	No
crump	No	No	Yes	No

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

Other hyponyms of crackle include scrunch, thud.

crackle (noun)	crump (noun)
glazed china with a network of fine cracks on the surface
the sharp sound of snapping noises

crackle (adjective)	crump (adjective)
having the surface decorated with a network of fine cracks, as in crackleware

crackle (verb)	crump (verb)
to become, or to cause to become, covered with a network of small cracks	explode heavily or with a loud dull noise
make a crushing noise	bombard with heavy shells
make a crackling sound	make a noise typical of an engine lacking lubricants