Describing the content of a digital resource overlaps into several element categories. To better understand the element description I am responsible for (Subject), in this post I outline other elements that cover content. Those of you in charge of other content elements, please weigh in with additions, corrections, and clarification.
Broad level content description. Terms such as: text, image, still image, moving image, notated music, sound.
Genre (can be part of Type)
More specific designation of content type. Terms such as books, diaries, drawings, engravings, movies, music scores, paintings, photographs, portraits, sculptures, slides, videos. DC includes this in the Type element; MODS has separate Genre element.
The topic of the resource. What the resource is of or about. Describes what is in the picture. Can include concepts, topics, persons, places, events, and objects. Use keywords or key phrases preferably from a controlled vocabulary.
Can be confused with DC Type element. Format element designates physical and/or digital carrier of content. For example: digital file format, physical medium, dimensions of physical object, digital file size. May be multiple formats of same type of content carrier. Includes both digital resource and original analog resource characteristics.
Adds to content description not covered in other elements or elaborates on content covered in other elements. Written in free-text.
Reference to a related resource. Describes other resources connected to resource being described. Use of unique identifiers recommended. Not to be confused with Format element.
Creating titles requires some subject analysis.
Coverage with Spatial and Temporal element
DC separates subject and coverage; MODS includes coverage as a subtopic of subject.