dry rot vs infection

dry rot

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

  • 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. 

infection

noun
  • A disease caused by a pathogen. 

  • The act or process of infecting. 

  • An uncontrolled growth of harmful microorganisms in a host. 

  • A visible sign of such a disease, such as the suppuration of a wound. 

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