usage(The number of units or dollars of an inventory item consumed over a period of time); function(A prewritten formula that simplifies the process of entering calculations and enables the user to use formulas that might be difficult to build from scratch); operation(In mathematics, an action performed on a set of entities that produces a new entity. Examples of mathematical operations are addition and subtraction)
app(A set of instructions that a computer uses to perform a specific task, such as word processing, accounting, or data management); application(A set of instructions that a computer uses to perform a specific task, such as word processing, accounting, or data management)
