aerodrome, airdrome, airfield, airport, area, arena, arrangement, assumption, backbone, backcloth, backdrop, background, base, basic, basin, basis, battle, bedrock, borough, circumstance, combat, countryside, dirt, discipline, distance, domain, earth, earthiness, eligibility, elucidation, endow, engagement, essence, essentials, establishment, excuse, explanation, exposition, fall, field, fight, floor, footing, found, foundation, framework, fundamental, glebe, globe, grassland, green, ground, grounding, groundwork, indoctrinate, keystone, land, lay, lea, length, locality, mainstay, mead, meadow, moment, motif, motive, mould, pedestal, place, postulate, premise, preparation, preparedness, preparing, presumption, presupposition, prospect, province, put, putt, qualification, radix,
realm, region, remoteness, riprap, root, selling, setting, site, soil, space, stake, substrate, substratum, substructure, terrene, theme, trail, training, treat, underpinnings, understanding, world