ground

acres, estate, land, lot, parcel, plot, property, real estate, realty

campus

backyard, churchyard, dooryard

close, enclosure (also inclosure), garden, garth, plaza

lees

ooze, silt, sludge

dross, slag, waste

antecedent, cause, consideration, impetus, incentive, inspiration, instigation, occasion, stimulus

common(s), croft [chiefly British]

grass, green, greensward, lawn

glade, grassland, heath, heathland, lea (or ley), meadow, moor, pasture, pastureland

anchorage, bed, brace, bulwark, buttress, framework, infrastructure, mount, prop, shore, stay, substratum, substructure, support

assumption, justification, premise (also premiss), presumption, presupposition, rationale, supposition, theory, thesis, warrant

backbone, center, core, cornerstone, eye, focus, heart, hub, kernel, keystone, nucleus, seat

essence, quintessence, soul, touchstone

blackland, clay, gault [chiefly British], gley, guck (or gook), gumbo, kaolin, muck, mud

dust, gravel, sand

humus, loam, topsoil

alluvium, colluvium, detritus, loess, marl, sediment, shingle, silt

duff, mull

subsoil, substratum

mise-en-scène, scene, scenery, set, stage

entourage, environment, milieu, setting, surroundings

continent, landmass, zone

island, isthmus, mainland, peninsula