breakage vs splintering

breakage and splintering both are nouns.

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

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

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

breakage (noun)	splintering (noun)
the act of breaking something	the act of chipping something
reimbursement for goods damaged while in transit or in use
the quantity broken