An Etymological Dictionary of Astronomy and Astrophysics

Agreement between persons, groups, nations, etc.; unanimity; accord.
→ concordance.
Music: A stable, harmonious combination of tones.

Etymology (EN): From O.Fr. concorde, from L. concordia “agreement, union,” from concors (gen. concordis) “of the same mind,” literally “of the same heart, hearts together,” from → com- “together” + cor “heart;” cf. Pers. del “heart;” Av. zərəd-; Skt. hrd-; Gk. kardia; Arm. sirt; P.Gmc. *khertan- (O.E. heorte, E. heart, Ger. Herz, Bret. kreiz “middle”);
PIE base *kerd- “heart”.

Etymology (PE): Hamsâzi, from ham-, → com-, + sâz “(musical) instrument; apparatus; harness; furniture,” from sâzidan, sâxtan “to build, make, fashion; to adapt, adjust, be fit” (from
Mid.Pers. sâxtan, sâz- “to prepare, to form;” Av. sak- “to understand, to mark,” sâcaya- (causative) “to teach”) + -i suffix that forms nouns from adjectives.