* Phrase: This is a common term for a short musical idea, often part of a longer melody.
* Motif: This refers to a distinctive, short musical idea that can be repeated or developed throughout a piece.
* Riff: This is a short, repeated musical phrase, often associated with rock, jazz, or blues.
* Hook: This is a catchy, memorable melody, often used as a chorus or refrain.
* Theme: This refers to a central melody that is developed and varied throughout a piece.
Ultimately, the best term to use depends on the specific melody and how it's used in the music.