The term functions as a noun phrase. The head of the phrase, and thus its primary part of speech, is the noun "final." The proper noun "Patriots Day" serves as a noun adjunct, modifying "final" to specify the particular concluding event being referenced.
In this grammatical construction, "Patriots Day" provides the specific context for the head noun, "final." This structure, where one noun modifies another, is common in English (e.g., "business meeting," "winter coat"). The modifying noun narrows the meaning of the head noun, distinguishing this specific concluding event from any other. Semantically, the phrase denotes a culminating competition or ceremony that is the focal point of the events associated with that particular holiday.
This classification as a noun phrase is crucial for its correct syntactical use. It allows the term to function as a subject, object, or complement within a sentence (e.g., "The _[subject]_ was broadcast live."). Understanding this informs content strategy by clarifying that the user's intent is to find information about a specific, tangible event, rather than an abstract quality or action.
