derisive vs sardonic

derisive

adj
  • Expressing or characterized by derision; mocking; ridiculing. 

  • Deserving or provoking derision or ridicule. 

noun
  • A derisive remark. 

sardonic

adj
  • Scornfully mocking or cynical. 

  • Disdainfully or ironically humorous. 

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