Agreement or accord.
A literary work which brings together or arranges systematically parallel passages of historians respecting the same events, and shows their agreement or consistency.
A pleasing combination of elements, or arrangement of sounds.
The relationship between two distinct musical pitches (musical pitches being frequencies of vibration which produce audible sound) played simultaneously.
The academic study of chords.
Two or more notes played simultaneously to produce a chord.
The condition of agreement by all parties, the state of being unanimous.