Spreadsheet
A piece of software used to work out calculations. It can include both text and numbers.
Formula
This is used to do every single calculation in the spreadsheet eg. A1*B2.
Function
This is used to do a very specific job within the spreadsheet eg. SUM, MAX.
Conditional formatting
This allows the user to include aspects like cell shading or font colour to cells if they follow a specified condition.
Validation
A way of ensuring that data entered is of the correct range type, length or is present.