What is the difference between a felony, gross misdemeanor, misdemeanor and petty misdemeanor?

Under Minnesota law, felonies are crimes punishable by more than one year in prison. Gross misdemeanors are crimes punishable by up to one year in jail and/or a fine of up to $3,000. Misdemeanors are crimes punishable by up to 90 days in jail and/or a fine of up to $1,000. Petty misdemeanors are deemed non-criminal violations of the law punishable by a fine of up to $300.