The keyword term "patriots day bombing date" functions as a noun phrase. In this construction, the main point or head noun is "date," which is described and specified by the preceding words.
A grammatical breakdown of the phrase reveals a hierarchy of modifiers. The word "date" is the core noun. It is modified by "bombing," which acts as a participial adjective to specify the type of event associated with the date. The proper noun "Patriots Day" further modifies "bombing," creating the compound modifier "Patriots Day bombing" that pinpoints the specific incident. Each preceding word narrows the focus, leading to the final, specific concept of the date.
Recognizing this term as a noun phrase is critical because it establishes the article's subject as a specific entity or piece of information, rather than an action (verb) or a quality (adjective). Consequently, the article's content should be structured to define, describe, and provide factual details about this particular date, treating it as the central topic of discussion.
