club head vs club-head

club head and club-head both are nouns.

Word	Noun	Adjective	Verb	Adverb
club head	Yes	No	No	No
club-head	Yes	No	No	No

As nouns, club head and club-head are synonyms defined as:

club head and club-head: (golf) the head of the club which strikes the ball

Other synonyms of club head include clubhead, golf-club head.

club head (noun)	club-head (noun)
(golf) the head of the club which strikes the ball	(golf) the head of the club which strikes the ball