obviate vs save the day

obviate

verb
  • To anticipate and prevent or bypass (something which would otherwise have been necessary or required). 

  • To avoid (a future problem or difficult situation). 

noun
  • Synonym of obviative 

adj
  • Synonym of obviative 

save the day

verb
  • To rescue a person or situation from imminent danger or major failure. 

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