What is the searchable program name of the "Files" application?

When in the file manager you click:

File -> About

It says "Files" is the name of the program.

When you type "files" in any search, whether on Google or AskUbuntu.com, it isn't very helpful.

What is a person who is having problems with "Files" supposed enter into the search engines?

In my case the "answer" was "Nautilus" but that's not really helpful in general because you might have a different file manager under the same name ("Files"). So to be (somewhat) certain here's a more general answer:

When you click on File -> About, it doesn't show you the name of the file manager. It shows you the word "Files".

To find out the name of the program you follow the directions in this Ask Ubuntu answer:

Find out which programs show up with the name "Files" when run

We need to look into all *.desktop files for the name. There, we find the command in the Exec line:

locate -b '.desktop' | xargs grep -ls '^Name.*=Files$' | xargs grep '^Exec.*'

lists desktop file names and commands for the GUI program Files