build up vs criticize

build up

verb
  • To accumulate, to pile up, to increase in stages. 

  • To close up by building. 

  • To strengthen. 

  • In solitaire card games, to place a card over another card of lower value. (e.g., place 5♦ over 4♣) 

  • To erect; to construct. 

criticize

verb
  • To evaluate (something), assessing its merits and faults. 

  • To find fault (with something). 

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