Overlap.

From EAPWiki

Definition: one object placed in front of another. Object that is in front is closer and in the foreground. Objects with obscured areas are in the background.

rings.jpg

Overlapping Rings

from: http://www.artprojectsforkids.org/2009/06/overlapping-rings.html

Retrieved from "http://esl.academyart.edu/wiki/index.php/Overlap."