gob vs gula

gob

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. 

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. 

gula

noun
  • The upper front of the neck, next to the chin; the upper throat. 

  • A capping moulding; a cymatium. 

  • A plate which in most insects supports the submentum. 

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