success story vs worker

success story

noun
  • A successful person or thing, serving as a model for others. 

  • Anecdotal evidence for the benefits of some product or policy. 

worker

noun
  • A person who performs labor for a living, especially manual labor. 

  • A nonreproductive social insect, such as ant, bee, termite, or wasp. 

  • A female ant, bee, termite or wasp. 

  • A thread performing one instance of a particular task within a program. 

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