THESAURUS
approach, bottleneck, collision course, concentralization, concentration, concourse, concurrence, confluence, conflux, congress, convergence, converging, crossing, focalization, focus, funnel, hub, meeting, mutual approach, narrowing gap, radius, spokes, tangent
ROGET THESAURUS
Convergence
N
convergence, confluence, concourse, conflux, congress, concurrence, concentration, convergency, appulse, meeting, corradiation, assemblage, resort, asymptote, converging, convergent, confluent, concurrent, centripetal, asymptotical, asymptotic, confluxible.