Research area usage involves studying how research areas are utilized by researchers, scientists, and other professionals in a particular field. This may include analyzing the popularity of certain research areas, tracking trends in publication topics, identifying emerging research areas, and understanding the impact of research area usage on the advancement of knowledge in a specific field. By examining research area usage, researchers can gain insights into the current state of a field, potential areas of growth, and collaborations among researchers. This analysis can also help stakeholders make informed decisions about resource allocation and funding priorities.