What is the difference of pilfer and rob?

The difference between "pilfer" and "rob" lies primarily in the scale and method of theft. "Pilfer" refers to stealing small amounts or items, often in a sneaky or gradual manner, typically involving minor thefts like taking small goods from a larger source. In contrast, "rob" implies a more forceful or violent act of stealing, often involving the threat or use of force against a person or establishment. Thus, robbing is generally considered a more serious crime than pilfering.