freeware vs software

freeware

noun
  • Complete and functional software that does not require payment or other compensation (such as viewing advertising) for its use. Freeware may be a proprietary license with no access to the source code. 

software

noun
  • Hyponyms: application software, data-oriented software, kitchen table software, on-premises software, malware, schlockware, shareware, shovelware, spyware, system software 

  • Encoded computer instructions, usually modifiable (unless stored in some form of unalterable memory such as ROM). 

  • The human beings involved in warfare, as opposed to hardware such as weapons and vehicles. 

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