The keyword term "patriots day movie cast" functions as a noun phrase. While composed of multiple words, the entire unit serves to identify a specific group of individuals: the actors involved in the film "Patriots Day."
In its structure, "Patriots Day" operates as a proper noun, specifically naming the film. "Movie" acts as an adjective modifying "cast," specifying the type of cast being referred to (i.e., not a play's cast or a television show's cast). The word "cast" itself is the head noun, denoting the collection of performers in a theatrical or cinematic production. When combined, these elements create a complex nominal unit. The primary function of this phrase in a sentence, whether as a subject or an object, is to name or refer to this particular ensemble of actors.
Therefore, for the purpose of article categorization and natural language processing, "patriots day movie cast" should be primarily understood and treated as a unified noun phrase, indicating a specific subject or topic for discussion concerning the actors of the aforementioned film.
