XXX vs decent

XXX

symbol
  • An indicator of hazard or poison. 

  • Traditional brewer's mark for barrels of extra strong beer—extended to other alcoholic beverages and other products having an extra strong dimension (varying from laundry soap to pornography). 

adj
  • Extra strong; very high quality. 

  • Designating extreme or hardcore pornography. 

verb
  • To delete; to cross out, especially to conceal or suggest vulgar language. 

noun
  • Triple X syndrome. 

decent

adj
  • Sufficiently clothed or dressed to be seen. 

  • Having a suitable conformity to basic moral standards; showing integrity, fairness, or other characteristics associated with moral uprightness. 

  • Significant; substantial. 

  • Fair; good enough; okay. 

  • Conforming to perceived standards of good taste. 

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