Ключевые слова: background, calm, care, color, comfort, comfortable, copy, cord, ear, earplug, earplugs, equipment, flat, health, hear, hearing, industrial, lay, loud, medical, nobody, noise, object, orange, pair, pink, plug, plugs, prevention, protection, protective, quiet, reduce, relax, rest, safety, silence, sleep, sleeping, soft, sound, space, text, top, view, volume,