software vs software package

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. 

software package

noun
  • A suite of programs that function as a single entity to accomplish a task, or group of related tasks. 

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