con ‧ cord /ˈkɒŋkɔːd $ ˈkɑːŋkɔːrd/ BrE AmE noun [uncountable]
[ Date: 1200-1300 ; Language: Old French ; Origin: concorde , from Latin concordia , from concors 'agreeing' , from com- ( ⇨ COM- ) + cor 'heart' ]
1 . formal the state of having a friendly relationship, so that you agree on things and live in peace OPP discord
2 . technical in grammar, concord between words happens when they match correctly, for example when a plural noun has a plural verb following it