zen, zen+ and zen2 are the architecture. Threadripper and Ryzen are product lines. I find that quite straight forward.
The really confusing part is, is that the Ryzen 4000 APUs will be zen2 architecture but the desktop CPUs without APUs or the mobile Ryzen 4000 series are zen3 architecture.
The really confusing part is, is that the Ryzen 4000 APUs will be zen2 architecture but the desktop CPUs without APUs or the mobile Ryzen 4000 series are zen3 architecture.