Master of Science vs Masters

Master of Science

noun
  • A degree that usually requires 2-3 years beyond a Bachelor of Science and emphasizes science and scientific applications. The degree is less advanced than a Doctorate degree. 

Masters

noun
  • A master's degree. 

  • A person holding a master's degree, as a title. 

name
  • A surname originating as an occupation 

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