An excel object has all the features of an Excel workbook because an excel book is a collection of more than one worksheet/spreadsheet including the rows, columns of the spreadsheets. the workbook is seen as the book while the spread sheet is seen as the pages contained in the book
An Excel object is the collection of all the entirety of the excel program which includes the rows, columns, images and the workbooks all created using the excel program. so the an excel object will have all the features of the workbook and even more than the workbook would have.
