A pair who associate with one another
English: couple, twosome, duo, duet
duet, duo, couple, duette, twosome
English: couple, twosome, duo, duet
English: duet, duette, duo
English: couple, pair, twosome, twain, brace, span, yoke, couplet, distich, duo, duet, dyad, duad
English: duet, duette, duo