Disquisition and Thesis

Disquisition noun - A systematic search for the truth or facts about something.

Thesis is a synonym for disquisition in study topic. In some cases you can use "Thesis" instead a noun "Disquisition", when it comes to topics like lecture, memoir.

Thesis noun - An idea or opinion that is put forth in a discussion or debate.

Disquisition is a synonym for thesis in study topic. You can use "Disquisition" instead a noun "Thesis", if it concerns topics such as dissertation, memoir, written dissertation.