The main difference between thesis and dissertation which level is demandable for the plan or project. Master's degree student prefer to write the thesis on the other hand PH.D or doctorate will go for the dissertation. There is one more difference that dissertation normally need vocal safety while thesis usually not. Learners should be capable to understand their methodology and explanation. Thesis literature help to increase the knowledge of current research on the relevant topic; therefore on other side dissertation help you to prove your casualness with the subject and academic background.