Jennifer Dornbush, author of “Forensic Speak”, has defined several types of crime evidence in TV procedurals.
These are human fluids and tissue such as blood, saliva, semen, skin and flesh.
These include CCCTV, testimonies, phone and bank records, photos, audio and video recordings.
These include finger, foot and hand prints.
These include bullet cases, weapons, pieces of torn clothing and other objects.
These include hair, nails, dirt and threads.
This is circumstantial and is deduced based on the clues available at the time.