build up vs ennoble

build up

verb
  • To strengthen. 

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

  • To close up by building. 

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

  • To erect; to construct. 

ennoble

verb
  • To bestow with nobility, honour or grace. 

  • To perform on a fabric the industrial processes of dry-cleaning, printing and embossing, and sizing and finishing. 

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