Add Another Document to a Word Document
Word can add an entire document into your work in a few quick steps.
Add a Portion of a Document to a Word Document
If you don’t want to add the entire contents of the file into your Word document, choose which parts of the document or worksheet that you want to insert.
Insert a Linked Text in a Document
If the text from the document you’re inserting might change, use linked text that can be updated easily. The linked text option offers a third method to insert a document that updates the document automatically if the original changes.
How to Update Linked Text
Because linked data is stored in the source file, linked objects can be updated if the source is changed. If the text changes in the original document, select the linked text object (the entire text of the insert will be selected), then press F9. This checks the original and updates the inserted text with the changes made to the original.