bird dog vs earwig

bird dog

verb
  • To watch closely. 

  • A multiservice tactical brevity code requesting configuration of sensors. 

  • To seek out. 

noun
  • A dog, especially a pointer, used in shooting to retrieve the dead birds. 

  • A tout. 

  • A person who seeks out real estate investment opportunities in exchange for a fee. 

  • A person who tries to steal someone else's romantic partner 

  • A radar detector (for detecting police speed traps). 

  • A hyperextension exercise performed lying on the knees, with one arm and the opposite leg lifted. 

earwig

verb
  • To eavesdrop on. 

  • To eavesdrop. 

  • To fill the mind of with prejudice by insinuations. 

  • To attempt to influence by persistent confidential argument or talk. 

noun
  • A flatterer. 

  • Any of various insects of the order Dermaptera that have elongated bodies, large membranous wings folded underneath short leathery forewings and a pair of large pincers protruding from the rear of the abdomen. 

  • One who whispers insinuations; a secret counsellor. 

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