Descriptive is defined as giving details or something that describes. An example of descriptive is someone giving a very detailed account of an experience they had; a descriptive person.

Description is the pattern of narrative development that aims to make vivid a place, object, character, or group. Description is one of four rhetorical modes, along with exposition, argumentation, and narration. In practice it would be difficult to write literature that drew on just one of the four basic modes. Wikipedia