Synonyms and related words :
adit, aerospace, aerosphere, air hole, air pocket, airspace, alveolation, alveolus, amplitude, antinode, antrum, aqueduct, armpit, basin, billow, bore, bottom, bottom glade, bottoms, bowl, breakers, bump, burrow, canal, canalization, canalize, carve, cavity, ceiling, chamfer, channel, chisel, chop, choppiness, chopping sea, chute, comb, comber, concave, concavity, conduit, corrugate, course, crack, crater, crest, crimp, crosswind, crypt, cup, cut, dado, dale, de Broglie wave, dell, delve, depression, diffraction, dig, dig out, dike, dingle, dip, dirty water, ditch, dredge, drill, drive, duct, eagre, eaves trough, egress, electromagnetic radiation, electromagnetic wave, empty space, engrave, entrance, entrenchment, excavate, exit, favorable wind, flute, fog, fold, follicle, fosse, frequency, frequency band, frequency spectrum, front, funnel chest, furrow, gap, gash, gill, glen, goffer, gouge, gouge out, gravity wave, groove, ground swell, grove, grub, guide, guided wave, gully, gutter, ha-ha, head wind, heave, heavy sea, heavy swell, high-pressure area, hole, hollow, hollow shell, in phase, incise, ingress, interference, intervale, ionosphere, jetstream, kennel, lacuna, lift, light, longitudinal wave, lop, low-pressure area, lower, lunar rill, mechanical wave, mine, moat, node, out of phase, overcast, pass, passage, passageway, peak, penstock, pentrough, period, periodic wave, pit, pleat, plow, pocket, popple, punch bowl, quarry, rabbet, radio wave, ravine, ray, reinforcement, resonance, resonance frequency, riffle, rifle, ripple, rise, roll, roller, rough water, roughness, rut, sap, scend, scoop, scoop out, score, scrabble, scrape, scratch, sea, seismic wave, send, shell, shock wave, shoot, shovel, sink, sinus, slit, socket, sound wave, soup, space, spade, strath, stratosphere, streak, striate, substratosphere, sunk fence, surf, surface wave, surge, swell, tail wind, tidal bore, tidal wave, tide wave, transverse wave, trench, tropopause, troposphere, troughing, troughway, tsunami, tunnel, turbulence, undulation, vale, valley, visibility, visibility zero, vug, wadi, water wave, wave, wave equation, wave motion, wave number, wavelength, wavelet, way, white horses, whitecaps, wrinkle