The keyword phrase "patriots day books for kids" functions grammatically as a noun phrase. The main point and central part of speech within this term is the noun "books."
A detailed analysis of the phrase's structure confirms this classification. "Books" serves as the head noun, which is the core subject being identified. The other words act as modifiers that specify the type of books. "Patriots Day," a proper noun, functions as a noun adjunct (or attributive noun), essentially acting like an adjective to describe the topic of the books. The concluding prepositional phrase, "for kids," also functions adjectivally, further refining the noun by identifying its intended audience.
Understanding this term as a noun phrase is crucial for the article's focus. It dictates that the primary subject is a tangible category of items (books), not an action or a concept. The article's purpose, therefore, is to present, review, or list these specific items. The modifiers "Patriots Day" and "for kids" define the precise scope, guiding the content to directly satisfy a user's search for a specific resource list.