What is the difference between forensic science and crime scene investigator?

Forensic science tends to be an umbrella term used to cover all of the sciences involved in the application of law. Therefore, virtually any science can be used in modern criminal investigations. "Forensic" is a term that is derived from the latin "forum" which refers to the Romans and their meeting places where they discussed important issues of the day. Crime Scene Investigation is a branch of forensic science. It deals with the forensic investigation process carried out at the scene of the crime. CSIs recover physical evidence which is brought to a forensic laboratory where a "bench" scientist will then carry out further scientific testing. Consequently, crime scene investigation is a branch of forensic science the same as forensic toxicology, forensic Biology or forensic chemistry to name but a few examples.