Foreground
Part of speech: verb
Definition: To place in the foreground (physically or metaphorically)
Part of speech: noun
Definition: The elements of an image which lie closest to the picture plane. The subject of an image, often depicted at the bottom in a two-dimensional work. the application the user is currently interacting with; the application window that appears in front of all others.
Background
Part of speech: noun
Definition: One's social heritage; what one did in the past/previously.A part of the picture that depicts scenery to the rear or behind the main subject; context.Information relevant to the current situation about past events; history.A less important feature of scenery (as opposed to foreground.)The image or color, over which a computer's desktop items are show (e.g. icons or application windows).Activity on a computer that is not normally visible to the user