When two artists exchange art with each other based on a request the other gave them. These trades usually have a set meet-up time, and are equal in complexity. This tag is for posts that are drawn as part of said trade.
Not to be confused with gift art, where an artist draws a piece intended as a gift for someone else and expects nothing in return.
Only use this tag if you have proof that a post is part of an art trade (like it is mentioned as being in one in the artist's commentary, a link to the other artist's part of the trade, etc).