Ключевые слова: abstract, backdrop, background, ballot, black, blackboard, board, box, brainstorm, business, chalkboard, choice, closeup, communication, concept, creative, creativity, decision, education, handwriting, handwritten, idea, information, knowledge, learn, letter, memo, message, no, office, pink, referendum, school, space, speak, sticker, sticky, talk, teamwork, text, think, thinking, tick, vote, wall, word, work, working, yellow, yes,