An article that is "peer-reviewed" refers to articles that have undergone a rigorous review process, often including revisions to the original manuscript, by peers in their discipline, before publication in a scholarly journal. Other ways to describe a peer-reviewed article include empirical studies, review articles, scholarly articles, academic articles, or research articles.
In higher education, the term "article" could refer to multiple sources of information. You are probably most familiar with newspaper or magazine articles. These can be excellent resources when you are looking for information on current events on general topics. You can find these in a general online search, or use one of Cook's news databases to search more broadly. Newspaper & Magazine articles are not peer-reviewed.
Cook Library also subscribes to trade magazines & professional publications where you can find articles specific to an industry or discipline. Again, these are not peer-reviewed, rather written by and for professionals in the filed.
Many instructors and assignments require the inclusion of peer-reviewed articles that can only be found in scholarly journals. These articles are written by academic scholars to share new theories, research, and in-depth analysis within a particular field of study. These are harder to find on the open end, as most are published in subscription-based journals. Cook Library subscribes to research databases to provide you with access to this information.
Search for citations, abstracts, and full-text for the Baltimore Sun (1990-present), Christian Science Monitor (1980-present), New York Times (1980-present), Wall Street Journal (1984-present), and Washington Post (1987-present). ProQuest also provides digitized newspaper versions of the New York Times (1980-2008), Wall Street Journal (selected issues from 1982-2002), and Washington Post (selected issues from 1988-2008) with high-resolution facsimile images of the print editions.