musical vs dulcet

musical is a noun but dulcet is not a noun.

Word	Noun	Adjective	Verb	Adverb
musical	Yes	Yes	No	No
dulcet	No	Yes	No	No

musical (noun)	dulcet (noun)
a play or film whose action and dialogue is interspersed with singing and dancing

musical (adjective)	dulcet (adjective)
characteristic of or resembling or accompanied by music	pleasing to the ear
talented in or devoted to music	extremely pleasant in a gentle way
containing or constituting or characterized by pleasing melody
characterized by or capable of producing music