Background

Noun

 * 1) One's social heritage; what one did in the past/previously.
 * 2) A part of the picture that depicts scenery to the rear or behind the main subject; context.
 * 3) Information relevant to the current situation about past events; history.
 * 4) A less important feature of scenery (as opposed to foreground.)
 * 5)  The image or color, over which a computer's desktop items are show (e.g. icons or application windows).
 * 6)  Activity on a computer that is not normally visible to the user

Adjectives for Background
psychological; puritan; political; historical; rich; quakerish; botanical; proletarian; intellectual; educational; cultural; moral; monotheistic; inherited; pictorial; blurred; neutral; changeless; realistic; scenic; unwonted; stereotyped; garish; dense; serrated; meager; complex; star-flecked; shimmering;  kaleidoscopic; broad; effective; financial; conspicuous; attractive; authentic; religious; fitting; immaterial; plain; harmonious; rocky; precipitous; theatrical; social; domestic; appropriate; technical; fascinating; vivid; lush; convincing; serene; striking; unforgettable; imaginative; glamorous; enchanting; admirable; impressive; shabby; sinister; cluttered; bizarre; weirdest.

Verbs for Background
blend into—; broaden—; enhance—: fade into—; form—; maintain—; melt into—; paint—; screen—; set into—; weave—; — blends; —brightens;  —contrasts;  —enhances ; —looms ; —sets off.

Thesaurus
action, agora, amphitheater, anagnorisis, angle, architectonics, architecture, arena, argument, athletic field, atmosphere, auditorium, back, backdrop, background detail, backstage, bear garden, behind the scenes, blaseness, bowl, boxing ring, breeding, bull ring, campus, canvas, catastrophe, characterization, circus, cockpit, coliseum, color, colosseum, complication, continuity, contrivance, course, credentials, curriculum vitae, decorative composition, decorative style, denouement, design, detail, development, device, distance, episode, experience, fable, falling action, family, field, figure, floor, foil, foreground detail, form, forum, gimmick, ground, gym, gymnasium, hall, hinterland, hippodrome, history, horizon, in the background, incident, inconspicuous, line, lists, local color, locale, marketplace, mat, milieu, mise-en-scene, mood, motif, movement, mythos, national style, obscurity, offing, open forum, ornamental motif, palaestra, parade ground, past experience, pattern, period style, peripeteia, pit, place, plan, platform, plot, practical knowledge, practice, precinct, prize ring, public square, purlieu, range, rear, recognition, remote distance, repeated figure, ring, rising action, sagacity, scene, scene of action, scenery, scheme, seasoning, secondary plot, setting, site, slant, sophistication, sphere, squared circle, stadium, stage, stage set, stage setting, story, structure, style, subject, subplot, switch, tempering, terrain, the distance, theater, thematic development, theme, tilting ground, tiltyard, tone, topic, touch, training, twist, unnoticed, unobtrusive, unseen, upbringing, vanishing point, walk, worldly wisdom, wrestling ring