plook vs whitehead

plook

whitehead

noun
  • A species of passerine bird, endemic to New Zealand (Mohoua albicilla) 

  • The surf scoter duck. 

  • The blue-winged snow goose, Anser caerulescens caerulescens. 

  • A pimple formed by a clogged sebaceous gland, usually with a milky-white cap. 

  • A domestic pigeon of a particular breed; a white-tailed monk. 

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