subsume vs sum up

subsume

verb
  • To consider an occurrence as part of a principle or rule; to colligate 

  • To place (any one cognition) under another as belonging to it; to include or contain something else. 

sum up

verb
  • To summarize. 

  • To produce a total by adding. 

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