Why excel is called Spreadsheet or Worksheet ?
Each workbook can contain many worksheets. A workbook is a Microsoft Excel file where we enter and store related data, whereas a worksheet (spreadsheet) is a collection of cells on one sheet. The same is true with excel, in which many charts and graphs can be inserted and plotted based on the data, which allows for a lot of analysis of data.
Moreover, Excel has the ability to create pivot tables and charts that help to summarize data creatively. This is why Excel is known as spreadsheets and worksheets.