Ключевые слова: adult, arm, background, body, caucasian, collection, communication, concept, female, finger, fingers, fist, gesture, gestures, gesturing, greeting, hand, hands, hold, human, index, invitation, isolated, lettering, male, man, message, palm, people, person, phrase, pointing, showing, sign, signal, smoke, smoky, symbol, tag, text, touch, up, white, woman, word, wrist welcome,