Word is a word processing application released by Microsoft.
Excel is one of the components of Microsoft office software. It is a spreadsheet software written and run by Microsoft for computers with Windows and Apple Macintosh operating systems. Excel is an important part of Microsoft office suite software, which can process all kinds of data, make statistical analysis and assist decision-making, and is widely used in management, statistical finance, finance and many other fields.
PDF can be exchanged with word or excel through PDF reader.
Just copy and paste between word and excel.
However, the conversion will change the original typesetting format.