Hi,
Yes, you can install it separately using the link below: https://officecdn.microsoft.com/db/492350F6-3A01-4F97-B9C0-C7C6DDF67D60/media/en-US/PublisherRetail.img
Once the download is complete, disconnect from the internet and right-click > select > mount> select File Explorer > My Computer > the Office icon, > right-click to open the > > run the Office folder > setup64.exe file.
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Thanks