An enharmonic scale is a musical scale that has the same notes but is spelled differently. There are many synonyms for this term, including the quarter tone scale, the microtonal scale, the just intonation scale, and the non-equal temperament scale. All of these terms refer to scales that make use of notes that are close together in pitch, allowing for a more expressive and nuanced sound. Some other related terms include the chromatic scale, the pythagorean scale, and the equal temperament scale. Each of these scales has its own unique characteristics and is used in different musical contexts, making it important for musicians to understand the differences between them.