melodious vs mellifluous

melodious and mellifluous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
melodious	No	Yes	No	No
mellifluous	No	Yes	No	No

melodious (adjective)	mellifluous (adjective)
containing or constituting or characterized by pleasing melody	pleasing to the ear
having a musical sound; especially a pleasing tune