The familiar categories of speech include command, prohibition, report, question, and calling. Their communicative functions can be distinguished:
1. Command: requiring an act.
2. Prohibition: requiring restraint from an act.
3. Report: conveying information.
4. Question: an interrogative form.
5. Call: addressing someone.
The meaningful differences among these language functions do not force the conclusion that the one eternal attribute is composed of five separate temporal constituents. The differences concern addressees, objects, and expression.