stave vs crosspiece

stave and crosspiece both are nouns.

Word	Noun	Adjective	Verb	Adverb
stave	Yes	No	Yes	No
crosspiece	Yes	No	No	No

As nouns, crosspiece is a hypernym of stave; that is, crosspiece is a word with a broader meaning than stave:

stave (noun)	crosspiece (noun)
one of several thin slats of wood forming the sides of a barrel or bucket	a transverse brace
a crosspiece between the legs of a chair	a horizontal beam that extends across something
(music) the system of five horizontal lines on which the musical notes are written

stave (verb)	crosspiece (verb)
burst or force (a hole) into something
furnish with staves