(formal) an agreement, or a state of consistency, harmony, or agreement;
e.g. They were struggling to reach a concordance regarding the division of tasks.
(noun)
a list of important words found in a text, arranged alphabetically and accompanied by their contexts and/or citations to the passages in which they may be found;
e.g. For such a large text, a concordance is useful for when you need to quickly find a particular section.