thumbhole vs wood

thumbhole and wood both are nouns.

Word	Noun	Adjective	Verb	Adverb
thumbhole	Yes	No	No	No
wood	Yes	No	No	No

thumbhole (noun)	wood (noun)
a finger hole made to fit the thumb (as in a bowling ball)	any wind instrument other than the brass instruments
the hole in a woodwind that is closed and opened with the thumb	a golf club with a long shaft used to hit long shots; originally made with a wooden head
	the trees and other plants in a large densely wooded area
	the hard fibrous lignified substance under the bark of trees