Both criminal psychologists and forensic psychologists assist law enforcement professionals in investigating and solving crimes. However, they play different but complementary roles. The major difference between forensic psychology and criminal psychology is that while forensic psychologists specialize in the aftermath of a crime, including evaluating a suspect's mental state or counseling victims and their families, criminal psychologists focus primarily on determining a motive and creating a profile of the perpetrator.
Forensic psychology tends to be an umbrella term that includes criminal psych
They both are equally unique and cool fields of psychology. It depends on one's interest and passion for a subject.