Ключевые слова: abc, aid, alphabet, alphabetical, american, asl, black, caucasian, communicate, communication, concept, contrast, convey, deaf, deafness, disability, e, finger, gesture, gesturing, guide, hand, hear, hearing, help, idea, isolated, language, learn, letter, light, male, man, message, nonverbal, people, person, point, school, shadow, shadows, sign, signal, speech, stationery, symbol, talk, thumb, translate, translation, white, word,