splinter vs splintery

splinter is a noun but splintery is not a noun.

Word	Noun	Adjective	Verb	Adverb
splinter	Yes	No	Yes	No
splintery	No	Yes	No	No

splinter (noun)	splintery (noun)
a small thin sharp bit of wood or glass or metal

splinter (adjective)	splintery (adjective)
	resembling or consisting of or embedded with long slender fragments of (especially) wood having sharp points
	subject to breaking into sharp slender pieces

splinter (verb)	splintery (verb)
break up into splinters or slivers
withdraw from an organization or communion
divide into slivers or splinters