enchain vs exclude

enchain

verb
  • To restrain with, or as if with, chains. 

  • To link together. 

exclude

verb
  • To bar (someone or something) from entering; to keep out. 

  • To expel; to put out. 

  • To omit from consideration. 

  • To refuse to accept (evidence) as valid. 

  • To eliminate from diagnostic consideration. 

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