From the root of zeugnumi (to join, especially by a "yoke"); a coupling, i.e. (figuratively) servitude (a law or obligation); also (literally) the beam of the balance (as connecting the scales) -- pair of balances, yoke.
ζυγόν (zugon) − 4 Occurrences
ζυγός (zugos) − 1 Occurrence
ζυγῷ (zugō) − 1 Occurrence