Ключевые слова: background, block, blue, calm, care, concept, cone, deaf, ear, earplug, equipment, filter, guard, health, hear, industrial, insomnia, isolated, loss, loud, medical, noise, object, orange, pair, peace, personal, plug, prevention, protect, protection, protective, quiet, reduce, reduction, regulation, rubber, safe, safeguard, safety, shooting, silence, soft, sound, stopper, tools, volume, work, yellow,