ἁρμονία

1. a fastening to keep ship-planks together, a clamp , (Odyssey by Homer)

2. a joining, joint , between a ship's planks, τὰς ἁρμ. ἐπάκτωσαν τῆι βύβλωι caulked the joints with byblus, (Herdotus Historicus)

3. a frame : metaphorically, δύστροπος γυναικῶν ἁρμ. women's perverse temperament , (Euripides)

4. a covenant, agreement , in plural, (Iliad by Homer):—; settled government, order , (Aeschulus Tragicus)

5. harmony , as a concord of sounds , first as a mythical personage, Harmonia, Music , companion of Hebe, the Graces and the Hours; child of the Muses, (Homeric Hymns)

6. metaphorically, harmony, concord , (Plato Philosophus) (ML)