September 11th Attacks Wikipedia
The keyword term "september 11th attacks wikipedia" functions grammatically as a proper noun phrase. It operates as a single conceptual unit identifying a specific, unique entity: the Wikipedia article concerning the September 11th attacks. The entire phrase, when used as a title or search query, is treated as a noun. In this construction, the core subject is the noun phrase "September 11th attacks," which is a proper noun identifying a specific historical event. The second proper noun, "Wikipedia," acts as a post-nominal modifier or a noun adjunct. It specifies the context, source, or platform for the preceding subject. This grammatical structure, where one noun modifies another, is common in titles and search queries to create a more specific subject without using prepositions like "of" or "on" (e.g., "the Wikipedia article on the September 11th attacks"). ...