put aside vs save for a rainy day

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. 

save for a rainy day

How often have the words put aside and save for a rainy day occurred in a corpus of books? (source: Google Ngram Viewer )