bird dog vs snare

bird dog

verb
  • To seek out. 

  • A multiservice tactical brevity code requesting configuration of sensors. 

  • To watch closely. 

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. 

snare

verb
  • To ensnare. 

  • To catch or hold, especially with a loop. 

noun
  • A trap (especially one made from a loop of wire, string, or leather). 

  • A set of stiff wires held under tension against the lower skin of a drum to create a rattling sound. 

  • A similar looped instrument formerly used to remove tumours etc. 

  • A mental or psychological trap. 

  • A snare drum. 

  • A loop of cord used in obstetric cases, to hold or to pull a fetus from the mother animal. 

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