cave in vs object

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. 

object

verb
  • To disagree with or oppose something or someone; (especially in a Court of Law) to raise an objection. 

noun
  • A person or thing toward which an emotion is directed. 

  • An instantiation of a class or structure. 

  • An instance of one of the two kinds of entities that form a category, the other kind being the arrows (also called morphisms). 

  • Objective; goal, end or purpose of something. 

  • A thing that has physical existence but is not alive. 

  • The noun phrase which is an internal complement of a verb phrase or a prepositional phrase. In a verb phrase with a transitive action verb, it is typically the receiver of the action. 

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