roulade vs melodic phrase

roulade and melodic phrase both are nouns.

Word	Noun	Adjective	Verb	Adverb
roulade	Yes	No	No	No
melodic phrase	Yes	No	No	No

As nouns, melodic phrase is a hypernym of roulade; that is, melodic phrase is a word with a broader meaning than roulade:

Other hypernyms of roulade include air, line, melodic line, melody, strain, tune.

roulade (noun)	melodic phrase (noun)
(music) an elaborate run of several notes sung to one syllable	a succession of notes forming a distinctive sequence
a dish consisting of a slice of meat that is rolled around a filling and cooked