: A description of the research approach, design, or models used to gather data.

: A visual representation of the main idea, often used in scientific journals to complement written summaries. How to Write a Strong Abstract Writing an abstract - The Australian National University

: The most common type; it provides a comprehensive overview of all research parts, including findings.

: A summary of the major findings or specific data revealed by the research.

: A clear statement of the specific problem the work attempts to solve or the main research question being asked.

: Shorter and only describes what the paper is about without providing specific results.

: Briefly introduces the topic and explains why it is important or what research gap it addresses.