musician vs conductor

musician and conductor both are nouns.

Word	Noun	Adjective	Verb	Adverb
musician	Yes	No	No	No
conductor	Yes	No	No	No

As nouns, conductor is a hyponym of musician; that is, conductor is a word with a more specific, narrower meaning than musician:

musician (noun)	conductor (noun)
artist who composes or conducts music as a profession	a device designed to transmit electricity, heat, etc.
someone who plays a music as a profession	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