word fields

[Luscord]

Hi all,
I want to create a word document that has a first page summary that that contains fields that can be populated in in selected areas of the word document.
For exmaple.
Front page is a summary page that has standard questions.
eg Report date, Client, Property Address, (etc)
When the 1st page of the report is filled out, it populates other fields within body of the report.
I currently do this in excel template using the mail merge function but would like to just do it on say the front page of a standard report (a little like a summary page or executive summary).
Is there a function like this in word??
OR


Can you mail merge from fields within the same or even another word document?