application software vs vaporware

application software

noun
  • A set of computer programs that work together to solve a particular problem or to be used for a particular user-defined application. 

vaporware

noun
  • An advertised product, often computer software, whose launch has not happened yet and might not ever happen. 

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