The keyword term is a noun phrase. The core word, or head of the phrase, is "song," which is a noun. This is the main point of the phrase.
In this construction, the words "Veterans Day" function as a compound adjective (specifically, a noun adjunct or attributive noun). "Veterans Day" is a proper noun identifying a specific holiday, but here it modifies the noun "song" by specifying its theme, purpose, or association. This grammatical structure is common in English, where a noun is used to describe another noun (e.g., "coffee cup" or "business meeting"). The entire phrase refers to a specific type of object or concept: a musical composition related to the holiday.
Therefore, treating the keyword as a noun is crucial for the article's focus. The subject is the thing itselfthe song. An article centered on this keyword would logically describe, list, analyze, or provide examples of musical pieces appropriate for or written about the observance of honoring military veterans. The grammatical classification dictates that the content should revolve around this central concept.
