The keyword term "september 11th famous birthdays" functions as a noun phrase. The main point and grammatical core of this phrase is the plural noun "birthdays." The other words serve as modifiers that specify and describe this noun.
In this grammatical construction, "birthdays" is the head noun. It is pre-modified by the adjective "famous," which describes the characteristic of the people whose birthdays are being discussed. The term "september 11th" acts as an adjectival phrase, specifying the exact date. Together, these components form a compound nominal group that identifies a very specific topic: the birth dates of notable individuals that occur on a particular day of the year.
For the purpose of an article, this grammatical analysis is crucial because it establishes that the primary subject must be the people and the events of their births. The modifiers "famous" and "september 11th" are not the main subject but rather the limiting criteria that define the scope of the content. Therefore, the article's focus should be a profile, list, or discussion of well-known individuals born on that specific date.
