The keyword term "patriots day cast and crew" primarily functions as a noun phrase. In this construction, "Patriots Day" acts as a proper noun, specifically identifying the film in question. The terms "cast" and "crew" are common nouns.
Analyzing the phrase's components, "Patriots Day" serves as a fixed proper noun phrase, referring to the particular movie. "Cast" is a collective noun referring to all the actors who perform in the film, while "crew" is another collective noun encompassing all the technical and non-acting personnel responsible for the film's production (e.g., directors, cinematographers, sound engineers, production designers, grips, gaffers). The conjunction "and" links these two distinct groups. When combined, "patriots day cast and crew" collectively names the individuals involved in the making of the film "Patriots Day," thus behaving as a compound noun phrase.
Therefore, when considering the phrase as a whole, its dominant grammatical role is nominal, as it designates a specific set of people associated with a particular cinematic production. This classification is crucial for article indexing, content categorization, and understanding the core subject matter.