In Islamic law, hirabah is a legal category that comprises highway robbery (traditionally understood as aggravated robbery or grand larceny, unlike theft, which has a different punishment), rape, and terrorism. Ḥirābah (Arabic: حرابة) is an Arabic word for 'piracy', or 'unlawful warfare'. It comes from the triliteral root ḥrb, which means “to become angry and enraged”. The noun ḥarb (حَرْب, pl. ḥurūb حُروب) means 'war' or 'wars'.