grind vs crunch

grind and crunch both are nouns.

Word	Noun	Adjective	Verb	Adverb
grind	Yes	No	Yes	No
crunch	Yes	No	Yes	No

As nouns, crunch is a hypernym of grind; that is, crunch is a word with a broader meaning than grind:

Other hypernyms of grind include compaction, crush.

As verbs, grind and crunch are synonyms defined as:

grind and crunch: reduce to small pieces or particles by pounding or abrading

Other synonyms of grind include bray, comminute, mash.

As verbs, grind and crunch are synonyms defined as:

Other synonyms of grind include cranch, craunch.

grind (noun)	crunch (noun)
the act of grinding to a powder or dust	the act of crushing
hard monotonous routine work	the sound of something crunching
the grade of particle fineness to which a substance is ground	a critical situation that arises because of a shortage (as a shortage of time or money or resources)
an insignificant student who is ridiculed as being affected or boringly studious

grind (verb)	crunch (verb)
reduce to small pieces or particles by pounding or abrading	reduce to small pieces or particles by pounding or abrading
make a grating or grinding sound by rubbing together	make a crushing noise
press or grind with a crushing noise	crush with the teeth, making a grinding sound
shape or form by grinding	press or grind with a crushing noise
created by grinding
dance by rotating the pelvis in an erotically suggestive way, often while in contact with one's partner such that the dancers' legs are interlaced
work hard