A — 1: στόμα
(Strong's #4750 — Noun Neuter — stoma — stom'-a )

the mouth (cp. Eng., "stomach," from stomachos, 1—Timothy 5:23 ), has a secondary and figurative meaning in reference to the "edge of a sharp instrument, as of a sword," Luke 21:24; Hebrews 11:34 (cp. the Sept., e.g., Genesis 34:26; Judges 18:27 ). See FACE , MOUTH.

B — 1: δίστομος
(Strong's #1366 — Adjective — distomos — dis'-tom-os )

lit., "double-mouthed" (dis, "twice," and A.), "two-edged," is used of a sword with two edges, Hebrews 4:12; Revelation 1:16; 2:12 . In the Sept., Judges 3:16; Psalm 149:6; Proverbs 5:4 .