breakage vs cracking

breakage and cracking both are nouns.

Word	Noun	Adjective	Verb	Adverb
breakage	Yes	No	No	No
cracking	Yes	Yes	No	No

As nouns, cracking is a hyponym of breakage; that is, cracking is a word with a more specific, narrower meaning than breakage:

Other hyponyms of breakage include rupture, shattering, smashing, crack, fracture, chip, chipping, splintering.

breakage (noun)	cracking (noun)
the act of breaking something	the act of cracking something
reimbursement for goods damaged while in transit or in use	a sudden sharp noise
the quantity broken	the process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process)

breakage (adjective)	cracking (adjective)
	excellent