What is a dissertation?
Standard chapters
1. Introduction and research aims. 2. Literature review. 3. Methodology. 4. Results or findings. 5. Discussion. 6. Conclusion and recommendations, plus references and appendices.
Dissertation vs thesis in the US
In American universities a thesis is normally the master's-level project and a dissertation is the doctoral one. The UK convention is reversed, which is why sources disagree.
Related questions
How long does a dissertation take?
Six to twelve months for a master's dissertation; three or more years for a doctoral one.
Can I get help with a dissertation?
Yes — model chapters, methodology coaching, statistical analysis and editing are all legitimate supervised support.