Ritornellos are brief recurring phrases in music, often used as a musical hook or passage to mark a particular section of a song. Synonyms for ritornellos include refrains, choruses, and cadences. Refrains are short sections of music or lyrics that repeat throughout a song, while choruses refer to repeated sections of the lyrics that often change with each verse. Cadences are musical phrases that mark the end of a section or phrase, often repeated several times throughout a piece. Other synonyms for ritornellos may include motifs, themes, and loops. Regardless of the specific term used, ritornellos are a powerful tool for songwriters to create memorable and catchy songs that stick in the listener's mind.