Theme or Thematic
A theme is a broad idea or a message conveyed by a work, such as a performance, a painting, or a motion picture. This message is usually about life, society or human nature. Themes are the fundamental and often universal ideas explored in a work. Themes are usually implied rather than explicitly stated. Deep thematic content is not required in a visual work; however, some observers would say that all visual work inherently projects some kind of outlook on life that can be taken as a theme, regardless of whether or not this is the intent of the author.
A theme is also a unifying topic, and might be a subject or an idea. An artist, educator, writer, gallery or museum can select a theme as a means of choosing or ordering subject matter for a body of work, which will be or has been produced, perhaps to be studied in an art education program, or to be displayed in an exhibition.