com-=together,with,wholly 变化型 co-,col-,comb-,con-,cor-,coun-
1 (fml 文) harmony between people; lack of quarrelling and unfriendliness （人与人之间的）和谐, 一致, 和睦
*living in concord (with neighbouring states) （与邻国）和睦相处. Cf 参看 discord.
2 (grammar) agreement between words in gender, number, etc, eg between a verb and a plural noun as its subject （词与词之间在性、数等方面的）一致（如动词及其作主语的复数名词之间的）.
1200-1300; Language: Old French;Origin:
concorde, from Latin
concordia, from concors 'agreeing'
, from com- ( COM-
) + cor 'heart'
the state of having a friendly relationship, so that you agree on things and live in peace
in grammar, concord between words happens when they match correctly, for example when a plural noun has a plural verb following it