door, hole, peephole, peep, lens, optical, cover, circle, round, object, spy hole, access, background, glass, board, style, safety, secrecy, private, inspection, lock, look, metal, silver, chrome, old, protect, protection, secret, security, see, sight, view, system, texture, watch, wood, wooden, simple, household, set, serviceman, family, ocular, seat, enlisted man, perplexity, chromium, skilled worker, psychological state, sound, investigation, pile, confusion, circular, visual, plant, cry, barrier, opening, herb, blanket, worker, building material, countenance, heap, plank, mystery, timepiece, center, band, uncommunicativeness, work, appearance, batch, face, cheep, person, fastener, lumber, mass, enlisted person, cognitive state, expression, bedclothes