The keyword term "september 11th live coverage" functions grammatically as a noun phrase. The main point and central part of speech is the head noun, "coverage", which refers to the act of reporting or broadcasting an event.
In this construction, "coverage" is modified by the preceding words. "Live" is an adjective that describes the real-time nature of the reporting. The proper noun phrase "September 11th" functions as a noun adjunct (or adjectival), specifying the particular event that is the subject of the coverage. Both "September 11th" and "live" serve to narrow the definition of the head noun.
The critical implication for an article using this term is that the primary subject is the media's portrayal and dissemination of information, not solely the historical event itself. By identifying "coverage" as the core noun, the focus shifts to analyzing the journalistic process, the technological aspects of the broadcast, and the public's experience of the event through the lens of the media.
