1. (n.) A moving, flowing, or running together; confluence.

2. (n.) An assembly; a gathering formed by a voluntary or spontaneous moving and meeting in one place.

3. (n.) The place or point of meeting or junction of two bodies.

4. (n.) An open space where several roads or paths meet; esp. an open space in a park where several roads meet.

5. (n.) Concurrence; cooperation.

accompaniment accordance affluence afflux affluxion agglomeration agglutination aggregation agreement alliance approach articulation assemblage assemblee assembly assignation association asymptote at home ball bond bottleneck bracketing brawl cahoots call-up canvass caucus census clustering co-working coaction coincidence collaboration collection collectivity colligation collision course collocation colloquium collusion combination combined effort commission committee communication comparison concatenation concentralization concentration concert concerted action conclave concomitance concordance concurrence confluence conflux congeries conglomeration congregation congress conjugation conjunction connection consilience conspiracy conventicle convention convergence converging convocation cooperation copulation corralling correspondence council coupling course crosscurrent crossing current dance data-gathering date defluxion diet downflow downpour drift driftage eisteddfod festivity fete flow flowing fluency flux focalization focus forgathering forum funnel gathering get-together gush hookup housewarming hub inflow ingathering intercommunication intercourse interlinking inventory joinder joining jointure junction juxtaposition knotting levee liaison linkage linking marriage meet meeting merger merging mill run millrace mobilization muster mutual approach narrowing gap onrush onward course outflow pairing panel parasitism party plenum prom quorum race radius rally reception rendezvous rodeo roundup run rush saprophytism seance session set shindig simultaneity sit-in sitting soiree spate splice spokes stream surge survey symbiosis symposium synchronism synergy synod tangent tide tie tie-in tie-up trend turnout undercurrent undertow unification union united action water flow yoking