It depends on the context. For the purpose of this subthread, TUIs belong with GUIs, as both show you current state, make it interactive, and render a 2D view. In contrast, CLI tools only print out a snapshot of the current state (i.e. the output becomes stale as soon as it hits the TTY), and that snapshot is non-interactive.

In other contexts, you'd group CLIs and TUIs together. For example, both can be used from a terminal emulator, both are easy to use over SSH connection, and (an underappreciated feature) in both CLI and TUI apps, it's easy to just copy what they show as text.