Is there any difference between forensic psychology and forensic psychiatry?
Forensic psychology deals with criminal behavior. while the forensic psychiatry deals with diagnosis and management of mental illnesses that involves criminal justice. It is a degree of biology and forensic psychology is a subfield of psychology.
Just speaking etymologically the words have a completely different root. The 'Psych' which forms the intial start of both words comes from a Greek word meaning 'mind' or 'soul'. The more modern sense of the term Psyche comes from the mid-Nineteenth Century.
However psychology ends with 'Ology' whch comes from a Greek word 'Logos' meaning 'Study of' or 'Word'. So psychology literally translated from its etymology means 'The study of the mind.'
Psychiatry has an ending 'Iatry'. Here this ending refers to 'Iatro' another Greek word which originally meant 'healer' or 'healing'.
So psychiatry literally translated from its etymology would mean something like 'healing the mind'.
Comparing these two etymological roots gives us a key insight between the two approaches, one seeks to understand and one seeks to heal or treat actively.
The modern approach and difference relies on a medical distinction - a psychiatrist has some experience within the medical field and is able to prescrbe medication. While both a psychologist and psychiatrist can treat a patient with talking therapies, only the psychiatrist is likely to possess a medical background or knowledge along with the responsibility of prescribing medication.