garrote vs strangulate

garrote

verb
  • to execute by strangulation 

  • to kill using a garrote 

noun
  • an iron collar formerly used in Spain to execute people by strangulation 

  • something, especially a cord or wire, used for strangulation 

strangulate

verb
  • To strangle. 

  • To stop flow through a vessel. 

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