The English word “Sword” came from the Saxons in England but since they were not the inventors of the “Sword” what was it called before

‘By the time that the second Supplement to the OED (1972–1986) was being compiled, Hitler’s ‘Night of the Long Knives’ was a not very distant memory, and this called for an extended sense, relating to treacherous violence. But the German debacle was not the first to which long knives was applied. Back in the fifth century, Hengist and his Saxon forces, who had invaded Britain, invited the British King Vortigern and his entourage to a peace conference, and at a given signal the Saxons drew their swords and massacred the Britons: at least, according to Geoffrey of Monmouth’s semi-legendary History of the Britons . This slaughter became known as the treachery, plot, or treason of the long knives : first recorded in English in about 1604, but in Welsh ( twyll y cyllyll hirion ), in or before 1587. The long knives referred to were probably the short swords or saxes (Old English seax ) which were drawn at the command (as Geoffrey gives it) ‘ Nemet oure saxas ’. Although this was all a very long time ago, and may not even have happened as described, it clearly endured in memory: in Wales in 1847 a Government Report on the State of Education in Wales was referred to as the ‘treason of the Blue Books’. It is still employed as a historical term’ ( Release notes: the Long Knife | Oxford English Dictionary )

Wanbasion Black Stainless Steel Knife Set, Sharp Kitchen Knife