dissertation vs manuscript

dissertation

noun
  • A formal exposition of a subject, especially a research paper that students write in order to complete the requirements for a doctoral degree in the US and a non-doctoral degree in the UK; a thesis. 

  • A lengthy lecture on a subject; a treatise; a discourse; a sermon. 

manuscript

noun
  • A book, composition or any other document, written by hand (or manually typewritten), not mechanically reproduced. 

  • A single, original copy of a book, article, composition etc, written by hand or even printed, submitted as original for (copy-editing and) reproductive publication. 

adj
  • Handwritten, or by extension manually typewritten, as opposed to being mechanically reproduced. 

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