drum major vs conductor

drum major and conductor both are nouns.

Word	Noun	Adjective	Verb	Adverb
drum major	Yes	No	No	No
conductor	Yes	No	No	No

As nouns, conductor is a hypernym of drum major; that is, conductor is a word with a broader meaning than drum major:

Other hypernyms of drum major include director, music director.

drum major (noun)	conductor (noun)
the leader of a marching band or drum corps	a device designed to transmit electricity, heat, etc.
	the person who leads a musical group
	the person who collects fares on a public conveyance
	a substance that readily conducts e.g. electricity and heat