reunion

assembly, congress, convention, convocation, council, gathering, get-together, huddle, meeting, powwow

clinic, workshop

cabinet, caucus, conclave, synod

demonstration, rally

confab, conversation, dialogue (also dialog), discourse, discussion, palaver, talk

negotiation, parley, summit

conference, forum, round-robin, roundtable, seminar, symposium

audience, interview, session

reunification

agglomeration, amalgamation, blend, coalescence, commingling, compounding, fusion, intermingling, intermixture, mingling, mix, mixture, synthesis

combination, combining, connecting, connection, consolidation, coupling, junction, linking, merger, merging, unification, union