condensation vs dissertation

condensation

noun
  • The condensate so formed. 

  • The state of being condensed. 

  • when a single idea (an image, memory, or thought) or dream object stands for several associations and ideas. 

  • The reaction of two substances with the simultaneous loss of water or other small molecule. 

  • The conversion of a gas to a liquid. 

  • The act or process of condensing or of being condensed 

dissertation

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

  • 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. 

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