A paragraph is a group of words put together to form a group that is usually longer than a sentence.Essays usually have multiple paragraphs that make claims to support a thesis statement, which is the central idea of the essay.Paragraphs can begin with an indentation (about five spaces), or by missing a line out, and then starting again; this makes telling when one paragraph ends and another begins easier.In most organized forms of writing, such as essays, paragraphs contain a topic sentence .