surreal vs wacko

surreal

adj

  • Resembling a dream: fantastic and incongruous 

noun

  • surreal number 

wacko

adj

  • Amusingly eccentric or irrational. 

noun

  • An amusingly eccentric or irrational person. 

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