The main point of the keyword phrase "september 11 twin towers memorial" is the word "memorial," which functions as a noun. In this grammatical construction, "memorial" is the head noun, identifying the core subject. The preceding words, "september 11" and "twin towers," act as adjectival modifiers that specify the particular memorial being discussed.
This structure is a noun phrase where other nouns are used attributively to describe the final noun. "September 11" identifies the event the memorial commemorates, and "twin towers" specifies the original site and central focus of that commemoration. While "September 11" and "twin towers" are proper nouns on their own, within this phrase, their grammatical function is to modify "memorial." This analysis establishes that the article's primary subject is a specific commemorative object or place, not the historical event or the buildings themselves.
Identifying "memorial" as the core noun is crucial for shaping the article's focus. It dictates that the central theme is the commemorative entityits creation, design, purpose, symbolism, and impact on visitors and society. The modifiers provide the essential context, but the narrative and informational structure of the article should revolve around the concept of the memorial itself.
