doctoral thesis vs polemic

doctoral thesis

noun
  • A research paper that a student writes in order to complete the requirements for a doctorate; a dissertation. 

polemic

noun
  • A person who writes in support of one opinion, doctrine, or system, in opposition to another; one skilled in polemics; a controversialist; a disputant. 

  • A strong verbal or written attack on someone or something. 

  • An argument or controversy. 

adj
  • Having the characteristics of a polemic. 

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