This document provides an overview of the differences between keyword and subject searches when researching a topic. It defines keywords as descriptive words from a title or text, while subject headings are standardized terms assigned to materials on a topic. Keywords can be found anywhere in a document, while subject headings search a specific field. Keyword searches usually return more results but may be less targeted, while subject searches yield fewer but often more relevant results if the correct term is used. The document provides examples and tips for effective searching using both methods.