The word "process" implies side effects, right? The point of a process is to produce a series of side effects and then terminate with an exit code

Processes are long-running, sometimes running forever, so producing a value is absolutely not the purpose of a process

a process is definitely about doing

Cambridge dictionary says

a series of actions that you take in order to achieve a result

From Middle English proces, from Old French procés (“journey”), from Latin prōcessus, from prōcēdō.

pro (forward, action) + cedo :

- I go, move, proceed, go along, move along.
- I result, turn out, happen.
[...]
- I cede, give in or yield (to), step aside (for), give way (to)
- I become, turn into, be or become the equivalent of.