dotty vs kookie

dotty

adj

  • Having many dots. 

  • Mildly insane or eccentric; often, senile. 

noun

  • A shotgun. 

kookie

noun

  • kookaburra (Dacelo novaeguineae) 

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