A broken chord is a series of individual notes played in sequence, rather than all at once in a chord. There are several synonyms for this term, including arpeggio, rolled chord, and broken arpeggio. These terms all refer to the same technique of playing a chord in a way that creates a flowing, melodic effect. Arpeggio is the most commonly used term, especially in classical music. Rolled chord and broken arpeggio are more commonly used in popular music. Each term can be used interchangeably, though musicians may have a preference depending on their background and personal style. Overall, each of these terms describes a beautiful and versatile musical technique.