derisive vs discouraging

derisive

noun

  • A derisive remark. 

adj

  • Deserving or provoking derision or ridicule. 

  • Expressing or characterized by derision; mocking; ridiculing. 

discouraging

noun

  • discouragement 

adj

  • that causes discouragement 

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