freaky vs wacko

freaky

adj

  • Odd; bizarre; unusual. 

  • Sexually deviant. 

  • Scary; frightening. 

  • Resembling a freak. 

wacko

adj

  • Amusingly eccentric or irrational. 

noun

  • An amusingly eccentric or irrational person. 

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