gob vs thrombus

gob

noun
  • A lump of soft or sticky material. 

  • The mouth. 

  • A sailor. 

  • A whoopee pie. 

  • Waste material in old mine workings, goaf. 

  • Saliva or phlegm. 

verb
  • To pack away waste material in order to support the walls of the mine. 

  • To spit, especially to spit phlegm. 

  • To gather into a lump. 

thrombus

noun
  • A blood clot formed from platelets and other elements that forms in a blood vessel in a living organism, and causes thrombosis or obstruction of the vessel at its point of formation or travel to other areas of the body. 

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