Ключевые слова: abstract, acknowledgment, adorable, alphabet, announcement, appreciation, background, business, businessman, comment, communication, concept, congratulations, customer, expression, feedback, finger, girl, giving, graphic, grateful, gratitude, greeting, hand, happy, headline, holding, idea, letter, lovely, man, message, motivation, person, reminder, reply, response, satisfaction, sentiment, sign, symbol, text, thank, thank you, thankful, thanksgiving, white, wooden, word, you,