decomposition vs strengthening

decomposition

noun
  • 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. 

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

strengthening

noun
  • The process by which something is strengthened. 

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