CONSISTORY n. 2 definitions
Primarily, a place of standing or staying together; hence, any solemn assembly or council. To council summons all his mighty peers, Within thick clouds and dark tenfold involved, A gloomy consistory. Milton.
CONVENTION n. 2 definitions
A meeting or an assembly of persons, esp. of delegates or representatives, to accomplish some specific object, -- civil, social, political, or ecclesiastical. He set himself to the making of good laws in a grand convention of his nobles. Sir R. Baker. A convention of delegates from all the States, to meet in Philadelph…