shortness of breath vs whimper

shortness of breath

noun
  • difficulty in breathing; dyspnea 

whimper

noun
  • A low intermittent sob. 

verb
  • To cry with a low, whining, broken voice; to whine; to complain. 

  • To say something in a whimpering manner. 

  • To cry or sob softly and intermittently. 

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