decomposition vs dry rot

decomposition

noun
  • A biological process through which organic material is reduced to e.g. compost. 

  • The act of taking something apart, e.g. for analysis. 

  • The splitting (of e.g. a matrix, an atom, or a compound) into constituent parts. 

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. 

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