Burglary: Burglary is the unlawful entry, forced or not, onto another person’s property to commit a crime. Burglary usually involves theft, but there doesn’t need to be any property taken for the offense to be considered a burglary. The crime could be assault.
Robbery: Robbery occurs when someone takes another person’s property forcibly or by intimidation.
Theft: Theft and larceny refer to a person taking another person’s property without their permission.