unpalatable vs unpleasurable

unpalatable

adj

  • Unpleasant or disagreeable. 

  • Unpleasant to the taste. 

noun

  • Anything distasteful. 

unpleasurable

adj

  • that gives displeasure 

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