Google TV is an app/portal/service (with somewhat ill-defined boundaries, but I generally like it on my Chromecast, as it's able to pull in recommendations from basically all available sources, unlike Apple TV, which seems to have some feud with at least Netflix); the Chromecast with Google TV is the physical device I can plug into my TV to make it display Google TV.
The streaming protocol is currently called "Google Cast", as far as I can tell.
Cool, where do I buy a "Google TV" then?
It's still called "Chromecast with Google TV" as of today: https://store.google.com/us/product/chromecast_google_tv
Google TV is an app/portal/service (with somewhat ill-defined boundaries, but I generally like it on my Chromecast, as it's able to pull in recommendations from basically all available sources, unlike Apple TV, which seems to have some feud with at least Netflix); the Chromecast with Google TV is the physical device I can plug into my TV to make it display Google TV.
The streaming protocol is currently called "Google Cast", as far as I can tell.