What is the difference between a burglary and a robbery?

For example, in People v. Perry (2007) 154 Cal.App.4th 1521 (Perry), the victim returned to his car to find the defendant inside of it. (Id. at p. 1523.) The defendant ran, holding the victim's car stereo and a screwdriver or ice pick in his hand. (Ibid.) The victim managed to tackle the defendant. (Ibid.) The appellate court concluded the defendant's objective in committing the burglary was the theft of the victim's car stereo. (Id. at p. 1527.) The robbery, on the other hand, was committed when the victim confronted the defendant. (Ibid.) The defendant, however, had the same objective when he committed the robberythe theft of the car stereo. (Ibid.)