dry rot vs putrefaction

dry rot

noun
  • The crumbly, friable decayed portions of wooden members of buildings, especially at or below grade, usually caused by a fungal infection. 

  • Any progression of decay, corruption, or obsolescence. 

  • A fungal infection which affects plants, in particular potatoes. 

putrefaction

noun
  • Rotten material. 

  • The act of causing to rot; the anaerobic splitting of proteins by bacteria and fungi with the formation of malodorous, incompletely oxidized products. 

  • The state of being rotten. 

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