Jury cases are either civil or criminal. Civil cases are disputes between private citizens, corporations, governments, government agencies, or other organizations. Usually, the party that brings the suit (the plaintiff) asks for money damages for some wrong alleged to have been done.
The State brings a criminal case against 1 or more persons accused of committing a crime. The person accused of the crime is the defendant. The State must prove beyond a reasonable doubt that the defendant committed the alleged crime.