music director vs director

music director and director both are nouns.

Word	Noun	Adjective	Verb	Adverb
music director	Yes	No	No	No
director	Yes	No	No	No

As nouns, music director and director are synonyms defined as:

Other synonyms of music director include conductor.

music director (noun)	director (noun)
the person who leads a musical group	someone who controls resources and expenditures
	the person who leads a musical group
	someone who supervises the actors and directs the action in the production of a show
	member of a board of directors
	the person who directs the making of a film