δεκαδαρχία
From LSJ
τούτων γάρ ὄνομα μόνον κοινόν, ὁ δέ κατά τοὔνομα λόγος τῆς οὐσίας ἕτερος → though they have a common name, the definition corresponding with the name differs for each (Aristotle, Categoriae 1a3-4)
English (LSJ)
ἡ,
A government of ten, v.l. in Isoc.4.110, cf. D.6.22; = Lat. decemviratus, D.H.11.27. II decuria of cavalry, Arr.Tact.42.1.