Synonyms of unions

1 Syllable
blend, seam, joint
2 Syllables
junction, merging, meeting, hookup, tie-in, tie-up, compound, coupling, accord, melding, concord, fusion
3 Syllables
mixture, agreement, uniting, symbiosis, abutment, harmony, juncture, synthesis, confluence, unity, amalgam, unison, conjunction
4 Syllables
correlation, combination, congregation, concurrence, conciliation, commixture, intercourse
5 Syllables
unification, unanimity, agglutination, centralization, concatenation, incorporation, coadunation, consolidation, amalgamation