The operative part of speech for the keyword term is the verb "remember." The phrase functions as an imperative statement where the verb dictates the central action and theme. The proper noun "September 11th" serves as the direct object, specifying the subject that is to be acted upon.
Grammatically, the phrase is an elliptical construction, an implied command: "[You] remember September 11th." In this structure, the verb is the nucleus, establishing the main point as an act of commemoration or reflection. While "September 11th" is a potent proper noun signifying a specific historical event, its grammatical role within the phrase is that of the object. An analysis, therefore, centers on the dynamic process conveyed by the verb rather than the static nature of the noun it modifies.
Identifying the verb as the main point is a critical step in framing an article. It shifts the focus from a simple recounting of the event to a deeper exploration of its legacy and the act of memorialization. The article's thesis would thus be structured around the how and why of remembranceanalyzing concepts such as collective memory, historical consciousness, and the cultural significance of the imperative to never forget. This makes the verb the thematic and analytical anchor for the entire piece.