subject words = less hits & better
keywords = more hits & sometimes worse
A keyword means find the word anywhere--title, author, notes, description, publisher, etc.
The library homepage search box searches all library systems--the catalog, articles, and library websites.
The catalog contains all of the holdings of all Cornell University libraries including records for books, ebooks, DVD's/videos, sound recordings, magazines/newspapers/journals, online journals/newspapers, computer files, government documents, manuscripts and archives, maps, musical scores, and more. Everything but articles!
The advanced search in the library catalog allows for more precision. The drop down menu allows you to search by Author, Title, Keyword, or Subject, or combinations.
Use the search filters under "Limit your results."
To search the holdings of libraries beyond Cornell click on Results at “libraries worldwide” (Worldcat Local) page.