humorous vs ironic

humorous

adj
  • Full of humor or arousing laughter; funny. 

  • Showing humor; witty, jocular. 

ironic

adj
  • Done in an insincere and mocking manner; satirical. 

  • Acting in a unserious and teasing manner. 

  • Odd or coincidental; strange. 

  • Characterized by or constituting (any kind of) irony. 

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