Microsoft 365 Copilot is Office, which consists of Word ... At the very least it should have its own distinct icon that doesn't rely on text to identify that it's different.

Less than half a decade after Microsoft rebranded Office 365 to Microsoft 365 ... we will change the Microsoft 365 ...

Microsoft is testing an ad-supported free tier for the Microsoft 365 Copilot or Office apps. Typically, these apps are only accessible to those who purchase the Microsoft 365 subscription.