Evidence is something that provides grounds for belief. It is not necessarily definite proof, however.
For example, at a crime scene, technicians collect evidence. They look for fingerprints, hair samples, clothing threads, blood, etc. Suppose the fingerprints and clothing threads exactly match Fred, a handyman that works at a house where the owner has been murdered. His fingerprints are evidence that he has been inside the house, but does not prove that he committed a crime.
Proof has to be something absolute and definite, such as an actual video tape of Fred shooting the homeowner.
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