A spin-off or spinoff is any narrative work derived from an already existing work that focuses on different aspects from the original work.
I think the “focuses on different aspects” is what you’re missing.
It’s well known that Frasier was a spinoff of Cheers. A spinoff generally focueses on a different character, or views the show from a different point of view.
A reboot takes an existing franchise and “reboots” it. Frasier (2023) is generally a reboot because it takes the same show and restarts it. Frasier (1993) took a side character from Cheers and made an entire show about it.
Frasier 1993 and Frasier 2023 are both shows about the life of Frasier Crane.
Cheers is a show about the bar cheers and the regular barflies, and one of them is Frasier Crane. Thus Frasier is a spinoff.
If they took Freddie and made a show called “Freddie” then I would call it a spinoff.
I think the “focuses on different aspects” is what you’re missing.
It’s well known that Frasier was a spinoff of Cheers. A spinoff generally focueses on a different character, or views the show from a different point of view.
A reboot takes an existing franchise and “reboots” it. Frasier (2023) is generally a reboot because it takes the same show and restarts it. Frasier (1993) took a side character from Cheers and made an entire show about it.
If they took Freddie and made a show called “Freddie” then I would call it a spinoff.