Pirates as a category refers to those who engage in acts of piracy. The buccaneers were pirates who attacked Spanish shipping in the Caribbean Sea during the late 17th century. The term buccaneer is now used generally as a synonym for pirate. Originally, buccaneer crews were larger, more apt to attack coastal cities, and more localized to the Caribbean than later pirate crews who sailed to the Indian Ocean on the Pirate Round in the late 17th century. The Barbary corsairs, were pirates and privateers who operated from North Africa, based primarily in the ports of Tunis, Tripoli and Algiers.