What is another word for category or subject in photography?

The term that best aligns with the concepts of category or subject in photography is "genre." In photography, genre refers to the classification of various types of photographs based on their content or style. Examples of photographic genres include portrait, landscape, documentary, and street photography. Understanding genre helps photographers to identify their work within a broader context and allows audiences to navigate the vast array of photographic styles.

While "style," "type," and "theme" can have related meanings in different contexts, they do not specifically capture the idea of a category or subject in the way that "genre" does. "Style" often refers to the technique and approach used by the photographer, "type" can be too general, and "theme" is more about the underlying idea or message rather than a strict classification of photographic subjects. Thus, genre is the most accurate term when looking for a synonym for category or subject in photography.