Criminology,etc.

What’s the difference between a Criminologist and a Criminalist??

Criminologist

n : a specialist in criminology

crim·i·nol·o·gy Pronunciation Key (krm-nl-j)
n.

The scientific study of crime, criminals, criminal behavior, and corrections.

crim·i·nal·ist (krm-n-lst)
n.

A specialist in the collection and examination of the physical evidence of crime.
One deals with people, the other with physical evidence.