wood vs golfclub

wood and golfclub both are nouns.

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

As nouns, golfclub is a hypernym of wood; that is, golfclub is a word with a broader meaning than wood:

wood: a golf club with a long shaft used to hit long shots; originally made with a wooden head
golfclub: golf equipment used by a golfer to hit a golf ball

Other hypernyms of wood include club, golf-club, golf club.

wood (noun)	golfclub (noun)
any wind instrument other than the brass instruments	golf equipment used by a golfer to hit a golf ball
a golf club with a long shaft used to hit long shots; originally made with a wooden head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