The primary part of speech for the keyword term is a noun. The entire phrase "11 sep occasion" functions as a noun phrase, where "occasion" is the head noun, establishing the core subject as a specific event or point in time.
In this grammatical construction, "occasion" is a common noun that refers to a particular event. The preceding elements, "11 sep," function as an adjectival modifier. Specifically, "11 sep" (an abbreviation for 11 September) is a proper adjective that specifies and uniquely identifies which occasion is being discussed. This modification narrows the general concept of "occasion" to the singular, historically significant event of September 11th. The structure follows a common English pattern where a noun or date (in this case, "11 sep") modifies another noun, similar to phrases like "government policy" or "summer festival."
Identifying the term's function as a noun is crucial for article development. It frames the subject as a definable entity to be explored. Consequently, the article's focus will be on describing, analyzing, and contextualizing this specific eventits history, significance, impact, and remembrance. This grammatical classification provides a clear subject around which to build arguments, present evidence, and structure the narrative, treating the event as the central topic of inquiry.
