@ROB1961
Pretty much the same thing.
A Roku TV simply has the Roku OS integrated into the TV, and includes a digital tuner for Antenna/OTA broadcasting.
Roku streaming devices lack a digital tuner. Designed for internet streaming.
However, you can attach a Roku streaming device (or other streaming devices like Firestick, Onn, Chromecast with Google TV), to your Roku TV if you wish. Some users connect a Roku device to older Roku TVs to upgrade their performance.
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, 4802, 4850, Premiere+ 3921, Express 4k+ 3941, Streambar 9102