Forensic psychology deals with legal matters and help courts to convict offerenders, on other other hand Criminal psychology analyse Criminal behavior, thoughts and views.
Both fields try to find the cause behind the offense.
@ayesha naymat thanks your response was really informative
Forensic psychology is an umbrella term that would include criminal psychology, but could also include other subfields such as police psychology
@Emily M So forensic psychology covers all subfields?