kook vs wack

kook

noun
  • An eccentric, strange or crazy person. 

  • A boardsport participant who lacks style or skill; a newbie who acts as if they are better at the sport than they are. 

wack

noun
  • An eccentric; an oddball; a weirdo. 

  • A friendly term of address. 

adj
  • Annoyingly or disappointingly bad, in various senses; lousy, cringy, uncool, messed up. 

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