A family of Microsoft word processing software products for creating web, email, and print documents.
If you purchased Office 2016 via the HUP (Home Use Program), you may be able to reinstall via the Order History at https://www.microsoft.com/en-us/workplace-discount-program/order-history .
Note that you need access to the e-mail provided by your employer. If you are now working somewhere else, you can no longer access the product.