bachelor's thesis vs collegian

bachelor's thesis

noun

  • A thesis for bachelor's degree. 

collegian

noun

  • A student (or a former student) of a college 

  • An inmate of a prison. 

adj

  • Of or relating to a college or its students. 

How often have the words bachelor's thesis and collegian occurred in a corpus of books? (source: Google Ngram Viewer )