ague vs malaria

ague

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

  • The cold fit or rigor of the intermittent fever 

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

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

malaria

noun
  • A disease spread by mosquito, in which a protozoan, Plasmodium, multiplies in blood every few days. 

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