The term "book-keeper" refers to a professional responsible for maintaining financial records and transactions for a company. There are several synonyms for this profession, including accountant, auditor, clerk, financier, bookie, treasurer, controller, and book-checker. Accountant and auditor are commonly used interchangeably with book-keeper, and clerk is a term used to describe a book-keeper who focuses on data entry and financial record keeping. Financier, treasurer, and controller are synonyms used to describe higher-level financial management positions, while book-checker is primarily used to describe someone who verifies that financial records are accurate. Regardless of the synonym used, book-keepers are crucial to the financial success of an organization.