Theme is an adjective referring to subject that one wants to prove or develop in a literary work. Thematic means the same as subject matter, theme, topic, object, content, etc.
Theme is the set of themes for any artwork of artistic content. In the area of theater, cinema and television, the theme is the script, the plot, the plot, the context, etc.
Thematic is the predominant idea of an academic text, journalistic information, technical, literary etc. It is the central idea, well defined, simple or complex, developed in a clear way, for the reader's good understanding.
The genre of narrative called saga, tells legends where the themes are the adventures of famous characters. The Twilight Saga, a series of romance and fantasy books by American writer Stephanie Meyer, is a work that approaches the universe of vampires and other legendary creatures, and has as one of the main themes the relationship and adventures of Bella Swan and Edward Cullen.
Subject Area
A thematic area is the area of action of certain segments of society, for example, NGOs are Non-Governmental Organizations, which work in different areas, developing works within the most varied themes, such as education, professional training, children and adolescents, diseases such as AIDS, environment, ecology, human rights, indigenous peoples etc.