ague vs shudder

ague

noun
  • A chill, or state of shaking, as with cold. 

  • The cold fit or rigor of the intermittent fever 

  • An intermittent fever, attended by alternate cold and hot fits. 

verb
  • To strike with an ague, or with a cold fit. 

shudder

noun
  • A shivering tremor, often from fear or horror. 

  • A moment of almost pleasurable fear; a frisson. 

verb
  • To vibrate jerkily. 

  • To shake nervously, often from fear or horror. 

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