All of the above definitions can be considered as subtopics. Subtopics are the smaller ideas or concepts that support or relate to the main topic of a piece of writing. They help to expand and add depth to the main idea by providing supporting information or specific details. Subtopics can also be seen as categories or sections within a larger topic, allowing the writer to organize their thoughts and present their ideas in a cohesive manner. Overall, subtopics help to structure and clarify the content of a written piece.
