The main point of the key term is the word "significance," which functions as a noun. In this noun phrase, "September 11th" acts as an adjectival modifier, specifying which particular significance is the subject. Therefore, the grammatical part of speech for the core concept is a noun.
This construction is a noun phrase where "September 11th," a proper noun representing a date, is used as a noun adjunct. A noun adjunct is a noun that modifies another noun, functioning like an adjective. This is a common structure in English, seen in phrases like "government policy" or "climate change." The head of the phrase, and thus its primary grammatical component, is the final noun, "significance." Analyzing the phrase this way establishes that the article's central topic is not an event or a date, but rather the abstract concept of the importance, meaning, and consequence associated with that date.
Identifying the main point as a noun is crucial because it dictates the article's focus. The article must define, analyze, and elaborate on a conceptthe wide-ranging impacts and enduring importance of the event. The structure will likely explore various facets of this concept, such as its political, social, cultural, and historical dimensions. Had the keyword's core been a verb (e.g., "commemorating September 11th") or an adjective (e.g., "post-September 11th"), the article's purpose would shift to describing an action or a quality, respectively. By centering on a noun, the article is framed as an in-depth examination of a multifaceted subject.
