γνοίης ὅσσον ὄνων κρέσσονες ἡμίονοι → you know how much better are donkeys from mules
convŏcātĭo: ōnis, f. convoco,I a convoking, calling, or assembling together: populi Romani, Cic. Red. in Sen. 15, 38.
convŏcātĭō,¹⁶ ōnis, f. (convoco), appel, convocation : Cic. Sen. 38.