benefits vs functionality

benefits

functionality

noun
  • The presence of a functional group. 

  • The ability to do a task, performance, or execution; a set of functions that something is able or equipped to perform. 

  • In United States trademark law, the tendency of a product design to serve a function other than identification of the product, preventing that design from being protected as a trademark. 

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