agreement vs compatibility

agreement

noun
  • An understanding between entities to follow a specific course of conduct. 

  • Rules that exist in many languages that force some parts of a sentence to be used or inflected differently depending on certain attributes of other parts. 

  • A legally binding contract enforceable in a court of law. 

  • A state whereby several parties share a view or opinion; the state of not contradicting one another. 

compatibility

noun
  • the capability of two or more items or components of equipment or material to exist or function in the same system or environment without mutual interference. 

  • The state of being compatible; in which two or more things are able to exist or work together in combination without problems or conflict. 

  • the capability that allows the substitution of one subsystem (storage facility), or of one functional unit (e.g., hardware, software), for the originally designated system or functional unit in a relatively transparent manner, without loss of information and without the introduction of errors. 

  • the continuity or good fit of material or members or components while being deformed. 

  • the ability to execute a given program on different types of computers without modification of the program or the computers. See backward compatibility and forward compatibility. 

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