coextensive

/ˌkoʊɪkˈstɛnsɪv/
adjective
  1. Having the same extent, range, or boundaries in space, time, or meaning.
    • In this theory, justice and fairness are coextensive concepts.
    • The two counties are coextensive in area, covering exactly the same square miles.
    • The flowering season is coextensive with the summer months.
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