Sword
Old English sw(e)ord, of Germanic origin; related to Dutch zwaard and German Schwert .
wiktionary
From Middle English sword, swerd, from Old English sweord(“sword”), from Proto-West Germanic *swerd, from Proto-Germanic *swerdą(“sword”), possibly from Proto-Indo-European *seh₂w-(“sharp”). Cognate with Scots swuird, swerd, sword(“sword”), North Frisian swird(“sword”), West Frisian swurd(“sword”), Dutch zwaard(“sword”), Low German Sweerd, Schwert(“sword”), German Schwert(“sword”), Danish sværd, Norwegian sverd, Swedish svärd(“sword”), Icelandic sverð(“sword”), Old East Slavic свьрдьлъ(svĭrdĭlŭ, “drill”).
etymonline
sword (n.)
Old English sweord, swyrd (West Saxon), sword (Northumbrian) "sword," from Proto-Germanic *swerdam (source also of Old Saxon, Old Frisian swerd, Old Norse sverð, Swedish svärd, Middle Dutch swaert, Dutch zwaard, Old High German swert, German Schwert "a sword"), related to Old High German sweran "to hurt," from *swertha-, literally "the cutting weapon," from PIE root *swer- (3) "to cut, pierce."
Contrast with plowshare is from the Old Testament (Isaiah ii.4, Micah iv.3). Phrase put (originally do) to the sword "kill, slaughter" is recorded from mid-14c. An older Germanic word for it is in Old Saxon heoru, Gothic hairus "a sword."
