Keyword - any word or phrase typed into a search box to initiate a search request. Relevancy ranking - InQuery , the American Memory search mechanism, returns a list of 'hits' as the result of a search request. In other words, InQuery ranks the hits according to their relevancy to your search request. Subject term - terms from the Library of Congress Subject Headings, the Thesaurus of Graphic Materials, or other approved thesauri which are used in collections in American Memory. Subject terms used in a collection may appear as a list linked off the collection home page or on individual item record web pages.
Subject terms are hot-linked to lists of items within the collection having the same subject term.
Clicking on a subject term will yield other items with the same subject term, shortcutting your search process.