choose vs co-opt

choose

verb
  • To elect. 

  • To prefer; to wish; to desire. 

  • To pick; to make the choice of; to select. 

  • To decide to act in a certain way. 

conj
  • The binomial coefficient of the previous and following number. 

co-opt

verb
  • To elect as a fellow member of a group, such as a committee. 

  • To absorb or assimilate into an established group. 

  • To commandeer, appropriate or take over. 

How often have the words choose and co-opt occurred in a corpus of books? (source: Google Ngram Viewer )