gulp vs mouthful

gulp

noun
  • The usual amount swallowed. 

  • An unspecified small number of bytes, often two. 

  • The sound of swallowing, sometimes indicating fear. 

intj
  • An indication of (the sound of) an involuntary fear reaction in the form of a swallowing motion. 

verb
  • To react nervously by swallowing. 

  • To swallow eagerly, or in large draughts; to swallow up; to take down in one swallow. 

mouthful

noun
  • The amount that will fit in a mouth. 

  • A tirade of abusive language. 

  • Something difficult to pronounce or say. 

  • Quite a bit. 

adj
  • Bombastic or awkward. 

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