Ключевые слова: abc, advertisement, agitation, alert, alphabet, amplifier, announcement, attention, background, black, call, color, communication, composition, concept, creative, decision, device, equipment, flat, grey, idea, information, lay, letters, light, loud, loudspeaker, megaphone, message, news, nobody, object, opinion, proclaim, promotion, propaganda, protest, scattered, sound, speak, speech, talk, thoughts, top, view, volume, white,