splintering vs breakage

splintering and breakage both are nouns.

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

As nouns, breakage is a hypernym of splintering; that is, breakage is a word with a broader meaning than splintering:

Other hypernyms of splintering include break, breaking.

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