disagreeable vs nonchalant

disagreeable

adj
  • Causing repugnance; unpleasant to the feelings or senses; displeasing. 

noun
  • Something or someone displeasing; anything that is disagreeable. 

nonchalant

adj
  • Indifferent; unconcerned; behaving as if detached. 

  • Casually calm and relaxed. 

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