Academic and scientific journals publish many different types of articles, and the names and categories they use to label and describe those documents are still more numerous. Scientific journals tend to focus on different kinds of articles than humanities journals do, and even when they publish similar kinds of articles, they often refer to them differently. This means that each basic type of scholarly article tends to have more than one name. What might be called a research article in one journal, for instance, might in another be labelled an empirical article, an original article, a full article or simply an article. A review article in one periodical could be referred to as a survey paper in the next, and the Brief Communications section in one journal might be entitled Micro-Articles in another.