A sextet is a group of six performers, while a sestet is also a group of six performers. Both terms refer to a group of six musicians, singers, or dancers who perform together. The term sextet is derived from the Latin word sextus, meaning 'six, ' while the term sestet is derived from the Latin word sestus, meaning 'six.' Both terms are used to describe a group of six performers who work together to create a unified performance.