The worksheet is single page spreadsheet or page in Excel, where you can write, edit and manipulate data, whereas the collection of such worksheets is referred as a workbook.

Is workbook and worksheet are same?

Workbook is an excel file containing many worksheets. A worksheet has a single spreadsheet containing data.

Can a workbook be within a worksheet?

Using Excel Worksheets and Workbooks

Even a single worksheet is contained in a workbook. When you have a workbook with more than one worksheet, a set of tabs at the bottom of the screen represent the worksheets in the workbook.