rob·bery n pl -ber·ies [Anglo-French robberie roberie, from Old French, from rober to take something away from a person by force]: the unlawful taking away of personal property from a person by violence or by threat of violence that causes fear: larceny from the person or immediate presence of another by violence or threat of violence and with intent to steal
aggravated robbery: robbery committed with aggravating factors (as use of a weapon, infliction of bodily injury, or use of an accomplice)
armed robbery: robbery committed by a person armed with a dangerous or deadly weapon
simple robbery: robbery that does not involve any aggravating factors
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.