gula vs oesophagus

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. 

oesophagus

noun
  • The tube that carries food from the pharynx to the stomach. 

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