What is the difference between an Excel worksheet, an Excel workbook, and Excel file?
A worksheet is a single (but very large) page of columns and rows. The intersection of a column and row is called a cell. Cells can contain many items (e.g., numbers, labels, formulas, words, sentences, hyperlinks). What you put in the cells depends on your needs. In most cases when you open a Microsoft Excel file you are opening a collection of Excel worksheets; for this reason the Excel file is called a workbook. When a new file is created in Excel three blank Worksheets are automatically added to the Workbook. The 3 worksheets are labeled Sheet1, Sheet2, and Sheet3 and you can see them one at a time by clicking on the tabs at the bottom of the Excel screen. If desired you can add more worksheets or delete worksheets. Also the names of the worksheets can be renamed by double clicking on them.