apposition - definition and synonyms

noun [uncountable] linguistics 

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/ˌæpəˈzɪʃ(ə)n/
  1. the relationship between two noun groups that are used next to each other and refer to the same person or thing. For example, in ‘David has a wife, a university teacher, and two adult sons’, ‘a wife’ and ‘a university teacher’ are in apposition.