The phrase "Patriots' Day April" functions as a noun phrase. Its core component, "Patriots' Day," is a compound proper noun that names a specific holiday. The word "April," also a proper noun, acts as a modifier to specify the timing of the event.
In this grammatical construction, "April" serves as a noun adjunct, which is a noun used to modify another noun. It functions adjectivally to provide descriptive information about "Patriots' Day." The entire phrase operates as a single conceptual unit, referring specifically to the holiday as it occurs within that month. The head of the phrase is the noun "Day," which is part of the formal title of the holiday.
Recognizing the term as a noun phrase is critical for its application in writing. It can be used as a subject (e.g., "Patriots' Day in April is a state holiday."), an object (e.g., "The region celebrates Patriots' Day in April."), or the object of a preposition. This grammatical classification dictates how the keyword can be integrated into sentences correctly and naturally, forming the thematic anchor for the article.
