Ключевые слова: address, arrive, await, background, box, business, color, communication, concept, container, correspondence, delivery, design, e mail, email, empty, express, flag, generic, group, inside, letter, mail, mailbox, mailman, message, metal, moving, network, news, object, office, open, package, paper, post, postage, retro, send, service, sign, single, social, space, stamp, white,