This document defines key terminology used in financial appraisal tools. It discusses fundamental concepts like alternatives, cash flows, time value of money, and evaluation criteria. It also defines interest rate, rate of return, simple interest, and compound interest. Various symbols used in financial analysis are introduced, like principal (P), future value (F), interest rate (i), and number of periods (n). Cash flow diagrams and the distinctions between rate of return, cost of capital, and minimum attractive rate of return are covered at a high level. Finally, common spreadsheet and financial calculator functions for present value, future value, payments, number of periods, interest rate, and internal rate of return are listed.