centralize vs consign

centralize

verb
  • To move things physically towards the centre; to consolidate or concentrate 

  • To move power to a single, central authority 

consign

verb
  • To assign; to devote; to set apart. 

  • To stamp or impress; to affect. 

  • To send to a final destination. 

  • To entrust to the care of another. 

  • To transfer to the custody of, usually for sale, transport, or safekeeping. 

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