compatibility vs grapple

compatibility

noun
  • 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 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 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. 

grapple

verb
  • To hook and raise with a grapple. 

  • To ponder and intensely evaluate a problem; to struggle to deal with. 

  • To climb (whether by means of a grapple and rope, or by hand, etc). 

  • To fasten, as with a grapple; (by extension) to fix; to join indissolubly. 

  • To wrestle or tussle. 

  • To seize something and hold it firmly. 

  • To use a grapple (for example to attempt to find, hook, and raise a net or cable). 

noun
  • A grapnel (“type of anchor”). 

  • A close hand-to-hand struggle. 

  • A combination of grape and apple flavors. 

  • The act of grappling. (uncountable) 

  • A device consisting of iron claws, attached to the end of a rope, used for grasping and holding an enemy ship prior to boarding; a grappling iron. 

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