grockle vs sunbird

grockle

noun
  • A tourist from elsewhere in the country 

sunbird

noun
  • A person, usually one who is retired, who travels from a warm climate to a colder one in the summer; one who oversummers elsewhere. 

  • A bird belonging to any of several species in the family Nectariniidae. 

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