The short version: Plain-language definitions help you ask better questions, but the contract, disclosure, account type, and jurisdiction determine the exact meaning.

Financial terms can look interchangeable when they are not. This glossary gives a practical first definition, followed by the detail most likely to change a decision.

Borrowing and saving

APR (annual percentage rate). A standardized annual measure used to describe borrowing cost. What it includes depends on the product and applicable disclosure rules, so compare like with like and read the fee table.

APY (annual percentage yield). A standardized annual measure of deposit earnings that reflects compounding. A quoted APY may change on a variable-rate account and does not erase fees or withdrawal conditions.

Compound interest. Interest calculated on principal and on interest already added to the balance. Compounding can grow savings, but it can also increase debt.

Principal. The base amount borrowed, invested, or deposited, before interest or returns. A loan payment may be divided among principal, interest, and fees.

Term. The period or contractual conditions governing an account, loan, or investment. “Term” can mean duration, but the full terms include much more than a date.

Fee. A charge for a product, service, transaction, or event. Ask what triggers it, whether it is recurring, and where it appears in the disclosure.

Position and access

Net worth. Assets minus liabilities at a point in time. It is an accounting snapshot, not a complete measure of financial health, income stability, or quality of life.

Liquidity. How readily an asset can be converted to cash without a large price concession or charge. A product can be sellable yet still carry liquidity risk in a stressed market.

Inflation. A broad rise in price levels that reduces what a unit of money can buy. A personal cost increase can differ from an official inflation index because each household buys a different mix.

Diversification. Spreading exposure across investments or risks. It may reduce the damage from one holding, but it cannot prevent all loss and depends on whether the holdings actually behave differently.

Credit records

Credit report. A record of credit activity supplied by a credit-reporting company. It may contain errors and is not the same thing as a score.

Credit score. A number calculated by a particular model from available report data to estimate credit risk. People can have multiple scores because models, versions, agencies, dates, and purposes differ.

Two useful distinctions

APR is not simply “what borrowing costs” in every circumstance. A borrower still needs to inspect late fees, variable-rate terms, introductory periods, and total payment estimates.

APY is not a promise that an account is suitable. Confirm whether the institution is insured, whether the account itself is covered, and whether minimum-balance or withdrawal rules apply.

A three-question translation test

Whenever a term appears in a sales page or agreement, ask:

  1. How is this term defined in this document?
  2. Which dollar amount, date, or event changes because of it?
  3. What fee, exception, tax, or loss scenario is not captured by the headline number?

That is more reliable than assuming a short glossary controls a contract.

Source notes

Source check: 27 July 2026.

This article provides simplified general education, not individualized financial, legal, tax, investment, or credit advice.

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