Keywords are one or more words (or a phrase) that describe the main ideas of your research topic.
Look for word(s) anywhere in the document
Do not require specialized, technical language
More flexible for searching - can combine terms in various ways
Usually generate larger number of results than a subject search
Often yield many irrelevant results
Do not take into account the meaning of the words, so if a word has multiple meanings (e.g. mouse), irrelevant results may show up
Subject Headings are a standardized set of words used to identify what something is about (aka the subject of the content).
A TITLE search allows you to find books, journals, magazines, newspapers, government publications, videos and any other type of library material by title.