Two Quartets is a term used to describe two groups of EIGHT people or things. The crossword solutions for this term are OCTET (5 letters), EIGHT (5 letters), and Octad (5 letters). OCTET is derived from the Latin word octo, meaning EIGHT, and is used to refer to a group of EIGHT musicians or singers. EIGHT is the cardinal number between seven and nine and is used to refer to a group of EIGHT people or things. Octad is derived from the Greek word oktas, meaning EIGHT, and is used to refer to a group of EIGHT people or things.