linkage (n.)

• accord
• addition
• adjunct
• affairs
• affiliation
• affinity
• agglomeration
• agglutination
• aggregation
• alliance
• approximation
• articulation
• assemblage
• association
• bond
• closeness
• clustering
• combination
• communication
• concatenation
• concourse
• concurrence
• confluence
• congeries
• conglomeration
• conjugation
• conjunction
• connectedness
• connection
• contiguity
• contrariety
• convergence
• copulation
• coupling
• dealings
• deduction
• disjunction
• filiation
• gathering
• homology
• hookup
• intercommunication
• intercourse
• intimacy
• joinder
• joining
• jointure
• junction
• liaison
• link
• linking
• marriage
• meeting
• merger
• merging
• nearness
• pairing
• propinquity
• proximity
• rapport
• relatedness
• relation
• relations
• relationship
• similarity
• splice
• symbiosis
• sympathy
• tie
• tie-in
• tie-up
• unification
• union