In the phrase "patriots day banks closed," the main point is conveyed through the interplay of a noun and a participle acting as an adjective. "Patriots Day" is a proper noun phrase functioning adverbially to specify time. "Banks" is a noun, serving as the subject. The crucial element, "closed," is a past participle functioning as a predicate adjective that describes the state of the subject. The structure implies a linking verb (e.g., "banks [are] closed"), making the core relationship a subject-complement construction.
This grammatical structure is a verbless clause, a common feature in headlines and search queries for efficiency. While "closed" can be a simple past-tense verb, its function in this context is stativeit describes a state of being rather than a completed action. The full declarative sentence would be, "Banks are closed on Patriots Day." The keyword phrase omits the copula ("are") and the preposition ("on"). The analytical focus is on how "closed" modifies "banks" by assigning it an attribute (its operational status) within the temporal frame provided by "Patriots Day."
For an article using this keyword, the central topic is the noun "banks," and the main assertion is their status, "closed." The noun phrase "Patriots Day" defines the scope and context. The article's purpose would be to confirm and elaborate on this fact: the operational status of financial institutions on that specific holiday. Therefore, the main point is the adjectival information about the noun subject.
