A doctoral thesis is a focused piece of original research which is performed in order to obtain a PhD. A dissertation is part of a broader post-graduate research project. ... So, a thesis will contain extensive citations and references to earlier work, although the focus remains on the original work that comes out of it.

What is difference between dissertation and thesis?

The main difference between a thesis and a dissertation is when they are completed. The thesis is a project that marks the end of a master's program, while the dissertation occurs during doctoral study.

Is Masters a dissertation or thesis?

One apparent difference that's accepted by some, and is shown currently in Google's top result¹, is that a thesis is undertaken while studying for a master's degree, while a dissertation is usually undertaken for a doctorate degree.