country of origin vs metropole

country of origin

noun
  • The country in which the most important processing took place. 

  • The country in which the last stage of substantial transformation of goods occurred. 

  • The country in which a person or thing is deemed to have originated for the purposes of laws and regulations. 

  • The country in which a substantial amount of processing took place. 

  • The country indicated on a label as being the country in which the goods were made. 

  • The country where shipped goods are produced. 

  • Country of first publication. 

metropole

noun
  • A metropolis; the main city of a country or area. 

  • The parent-state of a colony. 

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