leeway vs portability

leeway

noun
  • A varying degree or amount of freedom or flexibility. 

  • An adverse discrepancy or variation in a cumulative process, usually in the phrase make up leeway. 

  • The drift of a ship or aeroplane in a leeward direction. 

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 leeway and portability occurred in a corpus of books? (source: Google Ngram Viewer )