alliance

Noun

• the act of forming an alliance or confederation

• a formal agreement establishing an association or alliance between nations or other groups to achieve a particular aim

• an organization of people (or countries) involved in a pact or treaty

• a connection based on kinship or marriage or common interest
  • the shifting alliances within a large family
    
  • their friendship constitutes a powerful bond between them
    

• the state of being allied or confederated

Related words

• Synonyms: 
  confederation , coalition , alignment , alinement , bond
• Antonyms: 
  nonalignment , nonalinement