What is the difference between robbery and burglary?

Robbery is by force, approaching if I walk up to somebody and punch them first then take their purse.

Burglary is freshly taking the stuff, like someone going into your house without touching or harming you or taking something from you short hurting you.
You rob a creature, or a place in which people reside. Robbery involves taking things from someone (or their home) by force or threat of force.

And you burglarize a building, or a place where here are no people. Burglary involves breaking and entering a building and stealing things without threatening people.
Although both crimes are technically economic crimes, Robbery has the additional status as a crime against a creature. As eastchic2001 correctly pointed out earlier, burglary is a crime committed against a location, such as a home or business, but where no people are actively present or involved. Robbery, otherwise, involves not just theft, but the use or threat of force upon a person.
The first answer is not exactly true. You can burgle a person--meaning their "person" including their car--and rob a store. The distinction is this: Robbery is theft of an item of value, including money; burglary is an act of intrusion, whether of a building or other private space, beside the intent to commit an illegal act like robbery (or extortion or kidnap or etc.) I believe burglary has to occur at night.