This document defines key financial terms including credit, debit, interest, gross pay, net pay, fixed expenses, variable expenses, consumable goods, durable goods, FICA, salary, discretionary expenses, budget, credit score, financial institutions, and mortgage. Credit allows customers to obtain goods or services before payment. Debit refers to payments made or owed. Interest is money paid regularly for borrowing or delaying repayment of money lent. Gross pay is wages before taxes and net pay is wages after deductions like taxes. Fixed expenses do not change and variable expenses vary with production. Consumable goods are used up while durable goods last a long time. FICA taxes support Social Security. A salary is regular fixed compensation for work.