melody vs melodic phrase

melody and melodic phrase both are nouns.

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

As nouns, melody and melodic phrase are synonyms defined as:

melody and melodic phrase: a succession of notes forming a distinctive sequence

Other synonyms of melody include air, line, melodic line, strain, tune.

melody (noun)	melodic phrase (noun)
the perception of pleasant arrangements of musical notes	a succession of notes forming a distinctive sequence
a succession of notes forming a distinctive sequence