bowstring vs frog

bowstring

noun
  • The string of an archer's bow. 

  • The string of an archer's bow, as used by the Turks for strangling offenders. 

verb
  • To strangle with a bowstring. 

frog

noun
  • The part of a violin bow (or that of other similar string instruments such as the viola, cello and contrabass) located at the end held by the player, to which the horsehair is attached. 

  • A French person. 

  • Any of a class of small tailless amphibians of the order Anura that typically hop. 

  • A French-speaking person from Quebec. 

  • defector: a politician who simply switches between different political parties. 

  • An organ on the bottom of a horse’s hoof that assists in the circulation of blood. 

  • The part of a railway switch or turnout where the running-rails cross (from the resemblance to the frog in a horse’s hoof). 

  • An ornate fastener for clothing consisting of an oblong button (covered with netted thread), toggle, or knot, that fits through a loop. 

  • A type of fishing lure that resembles a frog. 

  • The depression in the upper face of a pressed or handmade clay brick. 

  • Road. Shorter, more common form of frog and toad. 

  • A leather or fabric loop used to attach a sword or bayonet, or its scabbard, to a waist or shoulder belt. 

verb
  • To unravel part of (a knitted garment) while knitting it in order to correct a mistake. 

  • To use a pronged plater to transfer (cells) to another plate. 

  • To hunt or trap frogs. 

  • To ornament or fasten a coat, etc. with frogs. 

  • To spatchcock (a chicken). 

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