τὸ τῆς πάλαι ποτε φύσεως ξύντροφον → the congenital property of nature
subs.
P. and V. ἔρις, ἡ, διαφορά, ἡ, στάσις, ἡ, Ar. and V. νεῖκος, τό (also Plat. but rare P.).