indivisible vs one and the same

indivisible

noun
  • An infinitely small quantity which is assumed to admit of no further division. 

  • That which cannot be divided or split. 

adj
  • Incapable of being divided; atomic. 

  • Incapable of being divided by a specific integer without leaving a remainder. 

one and the same

noun
  • The same person or thing. Used to emphasize the identity or equivalence of two things. 

det
  • The same person or thing. Used to emphasize the identity or equivalence of two things. 

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