The keyword phrase "film patriot day" functions as a proper noun. It acts as a single semantic unit to name a specific, unique entity: the 2016 motion picture titled Patriots Day. As a proper noun, it distinguishes this particular creative work from any other film or general concept.
Grammatically, the phrase is a compound structure. "Film" is a common noun that serves to classify the type of media. "Patriot Day," derived from the official title Patriots Day, is itself a proper noun that forms the specific name. When combined for use as a keyword, the entire phrase operates as a singular proper noun, similar to how "the novel Moby Dick" or "the album Abbey Road" refers to a specific title within a category.
Therefore, treating the term as a proper noun is the correct classification for the article's main point. This determination guides the focus of the content, ensuring it is about a singular work of art. It also has practical implications for editorial standards, such as capitalization (Film Patriots Day), and for digital optimization, as it targets user searches for this specific entity.
