The keyword term "patriots day holiday boston" functions grammatically as a noun phrase. Its primary role is to name a specific entity: a particular civic observance in a specific location. As a noun phrase, it serves as the subject or object within a sentence, identifying the core topic to be defined, described, or explained.
A detailed analysis of the phrase reveals its composite structure. The core of the phrase is the proper noun "Patriots' Day," which names the specific event. The common noun "holiday" acts as an appositive, clarifying the nature of Patriots' Day. The proper noun "Boston" functions as a noun adjunct, which is a noun used as an adjective to modify the preceding words and specify the geographical context where this holiday has particular significance.
This classification is critical for structuring the article. Since the main point is a noun (an entity), the article's purpose is to provide information about this entity. The content should focus on defining the holiday, detailing its history and significance, describing its traditions, and explaining its unique connection to the city of Boston. The keyword phrase establishes the subject, and the article's content should serve as the predicate, elaborating on that subject.