cave in vs go along with

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. 

go along with

verb
  • To acquiesce to or comply with a proposal, despite lacking a desire or value for it. 

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