phonos (Greek #5408)
murder
KJV usage: murder, + be slain with, slaughter.
Pronounce: fon'-os
Origin: from an obsolete primary φένω (to slay)
machaira (Greek #3162)
a knife, i.e. dirk; figuratively, war, judicial punishment
KJV usage: sword.
Pronounce: makh'-ahee-rah
Origin: probably feminine of a presumed derivative of 3163