disagreeable vs discouraging

disagreeable

adj

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

noun

  • Something or someone displeasing; anything that is disagreeable. 

discouraging

adj

  • that causes discouragement 

noun

  • discouragement 

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