Postmasters are individuals who manage the operations and services of a post office. The term postmaster can be replaced by several other words, including postal service managers, mail handlers, post office clerks, and mail carriers. Postal service managers oversee and direct the operations of a post office, while mail handlers assist with mail sorting and delivery. Post office clerks are responsible for handling money, filing records, and selling postage. Lastly, mail carriers are the individuals who deliver mail to homes and businesses. It is essential to understand that these words have different connotations and usage in the context of managing and operating a post office or any postal service.