overwhelm vs put a strain on

overwhelm

noun
  • The state or condition of being overwhelmed. 

verb
  • To overpower emotionally. 

  • To cause to surround, to cover. 

  • To engulf, surge over and submerge. 

  • To overpower, crush. 

put a strain on

How often have the words overwhelm and put a strain on occurred in a corpus of books? (source: Google Ngram Viewer )