| Main Entry: | |
| Part of Speech: | noun |
| Definition: | uprising of earth's surface; pile |
| Synonyms: | acclivity, ascent, bluff, butte, cliff, climb, down, drift, dune, elevation, eminence, esker, fell, gradient, headland, heap, height, highland, hillock, hillside, hilltop, hummock, inclination, incline, knoll, mesa, mound, mount, precipice, prominence, promontory, protuberance, range, ridge, rise, rising ground, shock, slope, stack, summit, talus, tor, upland |
| Antonyms: | canyon, ditch, gulley |
| Main Entry: | knoll |
| Part of Speech: | noun |
| Definition: | small hill |
| Synonyms: | acclivity, ascent, bluff, butte, cliff, drift, dune, elevation, esker, headland, heap, highland, hillock, hilltop, hummock, inclination, incline, knoll, mesa, mound, mount, precipice, prominence, promontory, ridge, rise, slope, summit |
| Main Entry: | mesa |
| Part of Speech: | noun |
| Definition: | plateau |
| Synonyms: | butte, elevation, highland, plain, tableland, upland |
| Main Entry: | mountain |
| Part of Speech: | noun |
| Definition: | very large hill |
| Synonyms: | abundance, alp, bank, bluff, butte, cliff, crag, dome, drift, elevation, eminence, glob, heap, height, hump, mass, mesa, mound, mount, palisade, peak, pike, pile, precipice, pyramid, range, ridge, shock, sierra, stack, ton, tor, volcano |
| Antonyms: | crevasse, valley |