It’s a useful distinction but frustrating to apply in practice because we don’t have a similar convention for many other UI elements like input fields and date

It’s a useful distinction but frustrating to apply in practice because we don’t have a similar convention for many other UI elements like input fields and date pickers. You can’t tell at a glance whether these will produce an effect immediately after entering a value, or whether there is a separate submission action. In terms of primitive types and common UI platforms, we have this immediate/deferred distinction for booleans and enums. Booleans are represented by checkboxes vs. switches as already discussed. And enums are represented by radio buttons (the traditional form element) vs. multi-part buttons (which Apple calls segmented controls).