The keyword phrase "September 11th Day of Remembrance" functions grammatically as a proper noun phrase. The core of the phrase is the noun "Day," which is modified by the other elements to name a specific, unique, and formally recognized day of observance. As a single cohesive unit, it names a particular event, much like other proper nouns such as "Memorial Day" or "The Fourth of July."
A detailed grammatical analysis reveals its structure. The headword is the common noun "Day." The term "September 11th" acts as a proper adjective, specifying which day is being referenced. The concluding phrase, "of Remembrance," is a prepositional phrase that functions adjectivally, describing the purpose or nature of the day. The combination of these modifiers with the head noun creates a compound term that names a singular, specific concept. Its consistent capitalization further solidifies its status as a proper noun.
Understanding this classification is crucial for its application in writing. As a proper noun phrase, it can act as the subject or object within a sentence, allowing for clear and precise communication about the observance. For example, it can be the subject ("September 11th Day of Remembrance honors the victims...") or the object ("The nation observes September 11th Day of Remembrance."). This grammatical clarity ensures the term is treated as the official title of the commemoration, maintaining its formal and respectful context throughout an article.
