The paper explores various types of chreia (declarative, responsive, scholastic , etc.) as a didactic genre. These various types include those that are still unresearched in the Russian linguistic literature, e.g., e.g., chriod, ethology, double chreia, and others This language phenomenon is analyzed and systematized and its correlation with a system of adjacent categories is specified. Chreia is juxtaposed to a) enres, such as gnome, parable, fable, and proverb. b) figures of speech, primarily to description and allegory.