crosspiece vs stave

crosspiece and stave both are nouns.

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

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

Other hyponyms of crosspiece include crossbar, rundle, rung, spoke, round, rung, cross thwart, thwart, transom, traverse.

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

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