act upon vs disobey

act upon

verb
  • To take action on the basis of information received or deduced. 

disobey

verb
  • To refuse or (intentionally) fail to obey an order of (somebody). 

  • To refuse or (intentionally) fail to obey. 

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