duet - noun

two items of the same kind

two performers or singers who perform together

a pair who associate with one another

a musical composition for two performers

(ballet) a dance for two people (usually a ballerina and a danseur noble)

duet - thesaurus

brace   couple   couplet   distich   duad   duette   duo   dyad   pair   span   twain   twosome   yoke