| level(noun, verb, adjective, activity, feature) |
| smooth(verb, adjective, activity, calm, press) |
| even(verb, adjective, adverb, activity, calm) |
| flat(noun, verb, adjective, calm, quiet) |
| flush(noun, verb, adjective, calm, quiet) |
| airplane(noun, transport, vessel, journey, vehicle) |
| horizontal(noun, adjective, calm, quiet, direct) |
| regular(adjective, calm, quiet, smooth, right) |
| surface(noun, verb, adjective, part, smooth) |
| uniform(verb, adjective, calm, quiet, smooth) |
| flatten(verb, activity, calm, quiet, clear) |
| glide(verb, movement) |
| skim(verb, movement, cut, trim, slash) |
| aeroplane |
| grade(noun, verb, clear, press, smooth) |
| plain(noun, adjective, calm, quiet, smooth) |
| shave(verb, cut, reduce, diminish, curtail) |
| stratum(noun, position, view, level, face) |
| planer(noun, tool) |
| soar(movement, ascent) |