Sindarin 

gwanath

death

  1. (act of dying) gwanath (i **wanath), pl. gwenaith (in gwenaith), 2) (act of dying, especially the ”death” of Elves by fading or weariness) gwanu (i **wanu), analogical pl. gweny (in gweny). Archaic gwanw (LR:397 s.v. WAN), hence coll. pl. ?gwanwath. Other words (rather referring to Death as a state or abstract): 3) gûr (i ngûr = i ñûr, o n**gûr = o ñgûr, construct gur), pl. guir (in guir = i ñguir), 4) gurth (i ngurth = i ñurth, o n**gurth = o ñgurth), pl. gyrth (in gyrth = i ñgyrth), 5) guruth (i nguruth = i ñuruth, o n**guruth = o ñguruth), pl. gyryth (in gyryth** = i ñgyryth)