The keyword phrase "patriots day streaming service" functions grammatically as a compound noun. In this construction, the entire phrase operates as a single conceptual unit to name a specific entity or category. The head noun, which is the core element being described, is "service."
A detailed grammatical analysis reveals a hierarchy of modifiers. The word "service" is modified by "streaming," a present participle acting as an adjective to specify the type of service. This creates the smaller compound noun "streaming service." The proper noun "Patriots Day" (the title of a film) then acts as a noun adjunct, or attributive noun, modifying the entire "streaming service" unit. Its function is to specify the particular content associated with the service being discussed.
Understanding this classification is crucial for content strategy. Because the phrase is a noun, it represents a person, place, or thing. Therefore, an article centered on this keyword should be informational, aiming to define, locate, or describe the specific platform(s) where the film is available for viewing. The grammatical structure dictates that the article's purpose is to provide a definitive answer to the user's implied query about the availability of a specific piece of media.