gaps, cracks, interstices, vacuum, lacunas, defects, craters, fissures, nulls, discontinuities, tensional, planarity, cavity, divots, floc, crevices, fibrocartilage, spalling, emptiness, backfill, intimal, pores, holes, deficiencies, sinkage, flaws, ruts, autunite, obstructions, ambiguities, grout, subsurface, inconsistencies, sinkholes, creases, pleural, vacancies, underflow, niches, pyrrhotite, crystal lattice, vacuoles, parallelograms, substrata, discolorations, bullae, thrombi, alveoli, crevasses, anomalies, diabase, indentations, raveling, penumbras, claystone, lamellae, dentine, crawlspace, ducts, crystallites, ruptures, chuckholes, seams, chasms, hollow, seeps, subarachnoid space, erosions, harborage, voidance, illegibility, kaolinite, forlornness, adularia, fibril, spackling compound, orbitals, discrepancies, polyhedra, dunnage, mold, igneous rock, invalid, transite, eustachian tube, covalent bond, subfloor, molybdenite, lapilli, passageways, silences, bedrock, voidable, recesses, rotor shaft, carnotite, jarosite, flux, eclogite, waviness, blanks, pericardial sac, openings, apertures, cavities, leakages, porosity, pits, reservoirs, asperities, basins, bays, bubbles, chambers, clusters, absorption, asymptotic, coefficient, curvature, deflection, gravimetric, haemoglobin, inertia, load, parameter, variance, x2, 5-3, activation, allometric, appraisal, area, audiometric, benefit, benefits

void