real = things such as weapons, records, fingerprints, & stolem property
demonstrative = not based on witness testimony; demonstratees info relative to crime (maps, x-rays, & photos: includes real evidence)
testimony = can be witnesses, oral evidence provided by legally competent witnesses (doctors, other professionals)
direct = eye witness accounts, confessions, weapons
circumstantial = provided by witness from which jury infers fact (test results, DNA, fingerprints)