ague vs congelation

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. 

congelation

noun
  • The state of being congealed. 

  • The act or process of passing, or causing to pass, from a fluid to a solid state, as by the abstraction of heat; the act or process of freezing. 

  • That which is congealed. 

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