drover (person who drives cattle over long distances); herdsman, cattleman (man who raises or tends cattle); cattle dog (type of dog used for droving cattle); plowman (man who plows land with a plough)
mailbox, letterbox (box or slot into which a courier or postal worker puts letters for a recipient to collect); mailbox, letterbox (box in which post can be left by a sender to be picked up by a courier or postman)