An Excel workbook is the entire spreadsheet file that contains one or more worksheets. When you create a new Excel file, you are creating a workbook that can hold multiple sheets for organizing different types of information.

Workbooks allow users to keep related datasets together. For example, a financial workbook might contain worksheets for revenue, expenses, forecasts, and summaries. Organizing data into a single workbook helps maintain structure and allows formulas to reference data across sheets.

Key Highlights

• A workbook is the main Excel file
• Contains one or more worksheets
• Helps organize related datasets together

Reference:

Wikipedia: Microsoft Excel

https://en.wikipedia.org/wiki/Microsoft_Excel