What is cvws.iCloud content?

I'm using a MBk Pro, 16" 2019 with Monterey 12.5. The info beneath the Safari tab for this open file shows it as "cvws.icloud-content. What does this mean? Is there an explanatory article?

To effectively help you in this setting where we can neither see nor touch your Apple device, we need more context from you:

• What Apple device?
• What operating system is it running?
• Where did you see this filename? Running an app? In an error message? in a diagnostic report?

Right now you have us guessing, and that seldom has a good outcome!