discouraging vs unpalatable

discouraging

adj

  • that causes discouragement 

noun

  • discouragement 

unpalatable

adj

  • Unpleasant or disagreeable. 

  • Unpleasant to the taste. 

noun

  • Anything distasteful. 

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