1. 郵便　   post, mail   postage stamps   interview   mobile   Hint Half-n-half Clue   2. 郵便箱　   picture   post box, mail box   post, mail   aerial   Half-n-half Clue   3. 切手   postage   airmail   postage stamps   express registered   Half-n-half Clue   4. 電報　   postman, mailman   express registered   postage stamps   telegram   Half-n-half Clue   5. 出版社　   press   script   television broadcasting   public telephone   Half-n-half Clue   6. 携帯電話　   airmail   phone booth   picture   mobile   Half-n-half Clue   7. 急行書留　   television broadcasting   express registered   interview   phone booth   Half-n-half Clue