The keyword term "september 11th born" functions as a compound adjective. It is a multi-word phrase that collectively acts as a single descriptive unit to modify a noun, such as "person," "individual," or "celebrity." Its purpose is to specify a particular attribute of the nounin this case, the date of birth.
Grammatically, the phrase is constructed from a noun phrase ("september 11th"), which specifies a date, and a past participle ("born"), derived from the verb "to bear." In this construction, the noun phrase acts as an adverbial, modifying the participle by indicating when the action of being born occurred. When placed before a noun, such phrases are typically hyphenated (e.g., "a September-11th-born individual") to prevent ambiguity and signal that they form a single adjectival idea. The absence of a hyphen is common in informal contexts or when the phrase is used as a keyword.
For the purpose of an article, establishing "september 11th born" as the main point means the article's central theme is descriptive. The focus will be on the qualities, characteristics, or shared experiences of the group of people defined by this adjectival label. The part of speech dictates that the subject is not the date itself, but rather the individuals who are characterized by being born on that date. Therefore, the article would explore topics relevant to this specific cohort, such as associated astrological signs (Virgo), numerology, or notable public figures sharing this birthday.