Concord is a feeling of harmony or an agreement of interests or feelings; accord. It can also be an agreement between individuals or groups.
Concord guildleves require you to turn in the required number of fish to someone in town. As fishing guildleves function similarly to tradecraft leves, these are essentially similar to Constancy leves.
A party of adventurers sits around a camp fire at night. The Lalafell is helping the Miqo'te with a fish recently caught.