On a filter condition, which component is always a choice list?

While 'Operator' is the functional name for the choice list component, 'Operation' is presented as the option in this question. Both refer to the same type of choice list.

'Filter Criteria' is a general term encompassing the entire condition, not a specific component that is always a choice list.

The 'Operation' (or 'Operator') component in the condition builder, which specifies how a field's value should be compared (e.g., 'is', 'contains', 'greater than'), is always presented as a dropdown choice list.

'Match Criteria' is a descriptive term for the filter's purpose and not a distinct component within the condition builder that is always a choice list.