gob vs tar

gob

verb
  • To spit, especially to spit phlegm. 

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

  • To gather into a lump. 

noun
  • The mouth. 

  • A sailor. 

  • A whoopee pie. 

  • A lump of soft or sticky material. 

  • Waste material in old mine workings, goaf. 

  • Saliva or phlegm. 

tar

verb
  • To besmirch. 

  • To create a tar archive. 

  • To coat with tar. 

noun
  • A file produced by such a program. 

  • A black, oily, sticky, viscous substance, consisting mainly of hydrocarbons derived from organic materials such as wood, peat, or coal. 

  • A Persian long-necked, waisted string instrument, shared by many cultures and countries in the Middle East and the Caucasus. 

  • A solid residual byproduct of tobacco smoke. 

  • A single-headed round frame drum originating in North Africa and the Middle East. 

  • Black tar, a form of heroin. 

  • Coal tar. 

  • A program for archiving files, common on Unix systems. 

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