gulp vs shortness of breath

gulp

noun
  • The sound of swallowing, sometimes indicating fear. 

  • An unspecified small number of bytes, often two. 

  • The usual amount swallowed. 

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. 

shortness of breath

noun
  • difficulty in breathing; dyspnea 

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