We have Schizophrenia and we don't know words like "Anhedonia" "Avolition" etc

I know what it is, only by the feeling, whatever someone else labels it, matters not to me.

Abulia is a less known one not so common in schizophrenia, but focusing more on lack of sponteneaty and inability to start an activity from what I heard. Kind of a mental lock.

Akathisia is a state of agitation, distress, and restlessness that is an occasional side-effect of antipsychotic and antidepressant drugs.