The main point of the keyword phrase "September 11th bombing" is the word "bombing," which functions as a noun. It serves as the head noun of the entire compound noun phrase, naming the specific event that is the subject of the article.
In this grammatical construction, "September 11th" acts as an adjectival phrase that modifies the noun "bombing." It specifies the date of the event, distinguishing it from other bombings. The word "bombing" itself is a gerunda verb ("to bomb") converted into a noun by adding "-ing." This structure is common for naming historical events, where a noun identifying the type of action (e.g., attack, massacre, bombing) is qualified by details of time or place.
Identifying "bombing" as the central noun is crucial for the article's focus. It establishes that the subject is not merely a date, but a specific type of violent act that occurred on that date. This directs the narrative and analysis toward the nature of the event, its perpetrators, its methods, and its consequences, framing the topic as an act of aggression rather than simply a point in time.
