combo (n.)
- addition
- admixture
- affiliation
- agglomeration
- aggregation
- agreement
- alliance
- alloy
- amalgam
- amalgamation
- assimilation
- association
- band
- blend
- blending
- brass
- cabal
- cartel
- centralization
- coalescence
- coalition
- combination
- combine
- commixture
- composite
- composition
- compound
- concoction
- confection
- confederacy
- confederation
- congeries
- conglomeration
- conjugation
- conjunction
- consolidation
- conspiracy
- ecumenism
- embodiment
- encompassment
- enosis
- ensemble
- federalization
- federation
- fusion
- group
- hookup
- inclusion
- incorporation
- integration
- intermixture
- junction
- junta
- league
- magma
- marriage
- meld
- merger
- mixture
- orchestra
- package
- paste
- quartet
- quintet
- sextet
- solidification
- strings
- symphony
- syncretism
- syndication
- syneresis
- synthesis
- tie-up
- trio
- unification
- union
- wedding
- woodwind