The keyword phrase "patriots day jake gyllenhaal" functions as a noun, specifically a compound proper noun or a noun phrase. It serves to name a specific, singular concept: the film titled "Patriots Day" in direct relation to the actor Jake Gyllenhaal.
This determination is made by analyzing its components and their collective function. "Patriots Day" is a proper noun, the title of a specific film. "Jake Gyllenhaal" is also a proper noun, the name of a specific person. When used together as a keyword, they do not describe an action (verb) or modify another word (adjective/adverb). Instead, they form a single conceptual unit that identifies the subject of inquiry. In grammatical terms, the entire phrase acts as the subject or object within a potential sentence, fulfilling the role of a noun (e.g., "Patriots Day Jake Gyllenhaal is the topic of our article.").
Recognizing the keyword as a noun is the critical step for article creation because it establishes the central subject. The article's purpose is not to perform an action or describe a quality, but to provide information about this specific entitythe film and the actor's connection to it. Therefore, all content, from the title to the body paragraphs, must be structured to explain, describe, or analyze this central subject, ensuring the article remains focused and relevant to the user's search intent.