The keyword phrase "September 11th memorial" functions grammatically as a noun phrase. The core word and main part of speech is the noun "memorial." This identifies the subject as a tangible entity or concepta place, structure, or institution created to honor and remember the events and victims of September 11, 2001.
In this construction, the term "September 11th" serves as a proper noun functioning as an adjective. It modifies the head noun ("memorial") by specifying its purpose and subject. This adjectival use distinguishes this particular memorial from others (e.g., a "war memorial" or a "national memorial"). The entire phrase operates as a single semantic unit to name a specific subject.
This grammatical determination is crucial because it establishes the article's focus on a concrete subject. By identifying the keyword as a noun, the content should be structured to describe, define, and analyze this entity. The narrative will center on the memorial's history, design, symbolism, purpose, and impact as a physical and cultural site, rather than on an action or a descriptive quality.
