The type of paragraph you write will depend on a number of factors:
Using clear paragraph structure will help the reader understand the purpose of your writing.
Types of paragraphs
An argument paragraph presents a point of view, and provides evidence to support the position taken by the writer. Evidence to support the position can include reasons, personal experience, statistics, confirmed facts and expert research.
In this type of paragraph, separate items are grouped together according to shared characteristics.
Compare or contrast paragraph
A compare and/or contrast paragraph is required if you are asked to examine similarities and/or differences. Compare focuses on similarities. Contrast focuses on differences.
The starting point for a definition paragraph is a simple definition in the first sentence (the topic sentence). Support sentences then give more information such as examples, description and explanation.
A description paragraph is used to write about how something looks, sounds, tastes, smells or feels. It includes specific details of the most important features
An explanation paragraph is required if you are asked to describe how something works, or how something happens.
In an illustration paragraph, specific examples are used to clarify and support a general statement.
Adapted from http://www.une.edu.au/current-students/resources/academic-skills/fact-sheets/media/nested-factsheets/paragraph-types