splint vs sliver

splint and sliver both are nouns.

Word	Noun	Adjective	Verb	Adverb
splint	Yes	No	Yes	No
sliver	Yes	No	Yes	No

As nouns, sliver is a hypernym of splint; that is, sliver is a word with a broader meaning than splint:

splint: a thin sliver of wood
sliver: a thin fragment or slice (especially of wood) that has been shaved from something

Other hypernyms of splint include paring, shaving.

splint (noun)	sliver (noun)
an orthopedic mechanical device used to immobilize and protect a part of the body (as a broken leg)	a thin fragment or slice (especially of wood) that has been shaved from something
a thin sliver of wood	a small thin sharp bit of wood or glass or metal

splint (verb)	sliver (verb)
support with a splint	break up into splinters or slivers
	form into slivers
	divide into slivers or splinters