fitness vs portability

fitness

noun
  • The condition of being fit, suitable or appropriate. 

  • The condition of being attractive, fanciable or beautiful. 

  • The cultivation of an attractive and/or healthy physique. 

  • An organism's or species' degree of success in finding a mate and producing offspring. 

portability

noun
  • The quality of being portable. 

  • The ability of a program (or software system) to execute properly on multiple hardware platforms. 

  • The ability of an employee to move between different social security schemes without losing their contributions. 

  • The ability of a telephone subscriber to keep his/her number when switching to a different network. 

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