cave in vs withstand

cave in

verb
  • To relent; to grant approval against one's initial will. 

  • To collapse inward or downward. 

noun
  • The act of relenting. 

  • The location where something has caved in. 

  • The act of something collapsing or caving in. 

withstand

verb
  • To oppose (something) forcefully. 

  • To resist or endure (something) successfully. 

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