A sword is a long-edged piece of metal, used as a cutting and/or thrusting and/or slashing weapon in many civilizations throughout the world. The word sword comes from the Old English sweord, cognate to Old High German swert, Middle Dutch swaert, Old Norse sverð (cf.Danish sværd, Norwegian sverd, Swedish svärd) Old Frisian and Old Saxon swerd and Modern Dutch zwaard and German Schwert, from a Proto-Indo-European root *swer- "to wound, to hurt". A sword fundamentally consists of a blade and a hilt, typically with one or two edges for striking and cutting, and a point for thrusting. The basic intent and physics of swordsmanship have remained fairly constant through the centuries, but the actual techniques vary among cultures and periods as a result of the differences in blade design and purpose. The names given to many swords in mythology, literature, and history reflect the high prestige of the weapon (see list of swords).