mixed bag vs software package

mixed bag

noun
  • A group of entities with few characteristics in common. 

  • Any bag containing a mixture of something. 

  • Something tending to have both good and bad results or characteristics; something having a mixture of advantages and disadvantages. 

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 mixed bag and software package occurred in a corpus of books? (source: Google Ngram Viewer )