disallow vs stick to

disallow

verb
  • To reject as invalid, untrue, or improper 

  • to overrule a colonial legislation by the sovereign-in-privy council 

  • To refuse to allow 

stick to

verb
  • To persist; to continue (to use, do, etc.) 

  • Used other than figuratively or idiomatically: see stick, to. 

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