Ключевые слова: abstract, advertisement, alphabet, announce, announcement, background, billboard, blank, board, bulletin, business, child, colorful, communication, company, cork, corkboard, empty, frame, information, isolated, meeting, memo, message, note, notice, noticeboard, office, pad, paper, pin, pinboard, post, remind, reminder, result, school, share, social, task, toy, university, white, wood, wooden, word,