And it shall be called "hangouts".
And it shall be called "hangouts".
Compare with iOS: Messages, Mail, Calendar, Wallet, Home.
These have longer names, clarifying e.g. "Google Wallet" if you go look at them on play store or something, but the actually displayed names that you actually see when using your phone are pretty much identical to iOS.
Other non-branded names include Calculator, Camera, Clock, Contacts, Docs, Files, Fit, Maps, News, Photos, Safety, Settings, Translate.
Branded names that I believe came with include Chrome, Google, Google One, Google TV, Play Store, and YouTube. Frankly I think it's pretty appropriate that all of those come with branding.
Your spreadsheets? No, they're not in Excel® or numbers.app or OpenOffice. They're in "Spreadsheets".
Same with documents: Not in Word or pages.app or w/e. They're in Documents.
Want to browse the web? No Safari or Firefox or Chrome names. Click on the icon that says "Web browser".
Your e-mail? Click the shiny "e-mail" icon.
(note: this is more about shielding/releasing the user from having to worry about underlying technologies. Basically, the "it just works" taken to the next level)
It's really nothing that most end users notice or care about, as long as they get their blue bubbles and fun features.
(To any xooglers reading this, sorry for the dose of PTSD)