* Formal and Academic: "The professor wrote a lengthy treatise on the history of the Roman Empire, citing numerous primary sources."
* Specific Subject: "Her treatise on the impact of social media on political discourse won her the prestigious academic award."
* Lengthy and Detailed: "The document was more than just a report; it was a full-fledged treatise on the company's future plans."
* Contrasting: "While some might consider it just a blog post, I see it as a concise treatise on the subject."
Remember, "treatise" implies a serious, in-depth study of a topic. It's not a casual word.