ecumenism (n.)

• addition
• affiliation
• agglomeration
• aggregation
• agreement
• alliance
• amalgamation
• assimilation
• association
• blend
• blending
• breadth
• broad-mindedness
• broadness
• cabal
• cartel
• centralization
• coaction
• coalescence
• coalition
• collaboration
• collectivism
• collusion
• combination
• combine
• combo
• commensalism
• communalism
• communism
• community
• complicity
• composition
• concert
• concord
• concordance
• concurrence
• confederacy
• confederation
• congeries
• conglomeration
• conjugation
• conjunction
• consolidation
• conspiracy
• cooperation
• cooperativeness
• duet
• ecumenicalism
• ecumenicism
• embodiment
• encompassment
• enosis
• esprit
• federalization
• federation
• fellowship
• fusion
• harmony
• hookup
• inclusion
• incorporation
• integration
• junction
• junta
• latitude
• league
• marriage
• meld
• merger
• morale
• mutualism
• mutuality
• octet
• package
• quartet
• quintet
• reciprocity
• septet
• sextet
• solidarity
• solidification
• symbiosis
• syncretism
• syndication
• syneresis
• synergism
• synergy
• synthesis
• teamwork
• tie-up
• trio
• triumvirate
• troika
• unification
• union
• wedding