accompaniment, accordance, affluence, afflux, affluxion, agglomeration, agglutination, aggregation, agreement, alliance, approach, articulation, assemblage, assembly, association, asymptote, bond, bottleneck, bracketing, cahoots, call-up, canvass, census, clustering, co-working, coaction, coincidence, collaboration, collection, collectivity, colligation, collision course, collocation, collusion, combination, combined effort, communication, comparison, concatenation, concentralization, concentration, concert, concerted action, concomitance, concordance, concourse, concurrence, conflux, congeries, conglomeration, congregation, congress, conjugation, conjunction, connection, consilience, conspiracy, convergence, converging, cooperation, copulation, corralling, correspondence, coupling, course, crosscurrent, crossing, current, data-gathering, defluxion, downflow, downpour, drift, driftage, flow, flowing, fluency, flux, focalization, focus, funnel, gathering, gush, hookup, hub, inflow, ingathering, intercommunication, intercourse, interlinking, inventory, joinder, joining, jointure, junction, juxtaposition, knotting, liaison, linkage, linking, marriage, meeting, merger, merging, mill run, millrace, mobilization, muster, mutual approach, narrowing gap, onrush, onward course, outflow, pairing, parasitism, race, radius, rodeo, roundup, run, rush, saprophytism, set, simultaneity, spate, splice, spokes, stream, surge, survey, symbiosis, synchronism, synergy, tangent, tide, tie-in, tie-up, tie, trend, undercurrent, undertow, unification, union, united action, water flow, yoking