put aside vs use economically

put aside

verb
  • Used other than figuratively or idiomatically: see put, aside. 

  • To save or keep (something) to be used at a later time. 

  • To ignore or intentionally disregard (something), temporarily or permanently, so that more important things can occupy one's attention. 

use economically

How often have the words put aside and use economically occurred in a corpus of books? (source: Google Ngram Viewer )