http://www.arthints.com/what-is-atmospheric-perspective/

A.aerial perspective, also called atmospheric perspective ,  method of creating the illusion of depth.

http://www.britannica.com/EBchecked/topic/7229/aerial-perspective

B.Atmospheric perspective:

 2.Workspace: create and manipulate your documents and files using various elements, such as panels, bars, and windows. Any arrangement of these elements is called a workspace.

http://helpx.adobe.com/photoshop/using/workspace-basics.html

A.Workspace refers to small premises provided, often by local authorities or economic development agencies, to help new businesses to establish themselves.

http://en.wikipedia.org/wiki/Workspace

B.Workspace:

3. Collage: Is a technique of an art production, primarily used in the visual arts, where the artwork is made from an assemblage of different forms, thus creating a new whole.

http://en.wikipedia.org/wiki/Collage

 A.collage:A work of art that is made by attaching pieces of different materials (such as paper, cloth, or wood) to a flat surface.

http://www.merriam-webster.com/dictionary/collage 

B. Collage