kook vs one-off

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. 

one-off

noun
  • Something unique and remarkable. 

  • Something that is done, created, etc. only once, and often quickly, simply, or improvisationally. 

adj
  • Occurring once, independent of any pattern; one-time. 

  • Singular; unique; special; remarkable. 

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