The keyword phrase "september 11th victims list" functions grammatically as a compound noun. The core or head noun of the phrase is "list," which determines its function within a sentence. The entire phrase refers to a single, specific entity.
In this construction, the words "september 11th" and "victims" act as modifiers. "Victims" is a noun functioning as a noun adjunct (or attributive noun), specifying the content of the list. "September 11th," a proper noun representing a date, functions adjectivally to further specify which victims the list pertains to. This hierarchical modification creates a highly specific and singular concept.
Understanding this phrase as a noun is the main point because it dictates its role in sentence structure. It can serve as a subject (e.g., "The list is a solemn record."), a direct object (e.g., "Researchers compiled the list."), or the object of a preposition. This grammatical classification is essential for constructing clear, precise, and accurate statements about the topic in an article.