| assimilation(combination, addition, amalgamation, integration, mixing) |
| brotherhood |
| cahoots(noun, set, combination, association, union) |
| cartel(set, merger, consolidation) |
| combine(noun, combination, association, union, compact) |
| combo(mix, blend, mixture, grouping) |
| concatenation(noun, agreement, combination, accord, compound) |
| concord(noun, agreement, combination, accord, harmony) |
| confederacy(noun, combination, combine, association, union) |
| confederation(noun, support, agreement, combination, combine) |
| confluence(noun, agreement, combination, accord, compound) |
| conglutination |
| conspiracy(noun, set, combination, combine, association) |
| convergence(noun, intersection, contraction, coupling, liquification) |
| federation(noun, support, agreement, combination, combine) |
| fellowship(noun, support, agreement, harmony, unity) |
| fraternization(combination, amalgamation, integration) |
| fusing |
| harmony(noun, support, agreement, combination, accord) |
| hookup(noun, set, agreement, combination, association) |