In the United States, the terms thesis and dissertation are often used in graduate education, but they refer to different academic milestones. A thesis is typically submitted during a master's program and involves research based on existing knowledge. In contrast, a dissertation is part of a doctoral (PhD) program and requires original research that contributes new insights to the fie... https://www.aimlay.com/what-is-the-difference-between-a-thesis-and-dissertation/