sliver vs splint

sliver and splint both are nouns.

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

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

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

Other hyponyms of sliver include turning.

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

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