An essay is a short-form piece of writing that addresses a unified goal or thesis. There are many types of essays and papers you can write as a student. The content and length of an essay vary depending on your level, subject of study, and specific course requirements. Essays have an introduction, body, and conclusion.
However, most academic essays share the same goal. They aim to persuade readers of a position or perspective through informed arguments, which are based on evidence, analysis, and interpretation.
Check out these resources:
Structuring your Essay