Accounting

Accounts Receivable
Money owed to a firm by customers for goods/services already delivered; a key working-capital item tied to trade credit.
Auditor
A professional (or firm) that examines financial information and controls to provide assurance that financial statements are fairly presented.
Bad Debt
Debt that is unlikely to be collected and must be recognized as a loss by the lender or seller.
Bad Debt Provision
An accounting charge that sets aside an allowance for expected losses on loans or receivables.
Depreciation
How depreciation works for assets and currencies, and why the distinction matters in economics.
Earnings
A firm's profit after costs, interest, and taxes, used to assess performance and valuation.