coextensive vs identical

coextensive

adj
  • Having the same spatial limits or boundaries; sharing the same area. 

  • Occurring over the same period of time; contemporaneous. 

  • Having the same extension—the object or set of objects to which a term refers. 

identical

adj
  • Bearing full likeness by having precisely the same set of characteristics; indistinguishable. 

  • Not different or other; not another or others; not different as regards self; selfsame; numerically identical. 

  • Of twins, sharing the same genetic code. 

  • Approximating or approaching exact equivalence. 

  • Exactly equivalent. 

  • For more quotations using this term, see Citations:identical. 

noun
  • Something which has exactly the same properties as something else. 

  • An identical twin. 

How often have the words coextensive and identical occurred in a corpus of books? (source: Google Ngram Viewer )