disregard vs truculence

disregard

noun
  • The act or state of deliberately not paying attention or caring about; misregard. 

verb
  • To ignore; pay no attention to. 

truculence

noun
  • The state of being truculent; eagerness to fight; ferocity. 

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