confuddle vs nonplus

confuddle

noun
  • The state of confusion and/or being befuddled. 

verb
  • To confuse thoroughly. 

nonplus

noun
  • A state of bewilderment or perplexity. 

verb
  • To bewilder or perplex (someone); to confound, to flummox. 

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