The keyword term "patriots day movie release date" functions grammatically as a noun phrase. The core element, or head noun, of this phrase is "date." The entire phrase operates as a single unit to name a specific piece of information.
This noun phrase is constructed through a series of modifiers preceding the head noun. Each preceding word serves to specify the noun that follows it. "Patriots Day," a proper noun, acts as an adjective modifying "movie." The term "movie" functions as a noun adjunct to specify the type of "release." Finally, "release" acts as a noun adjunct to describe the specific type of "date." This hierarchical modification(Patriots Day -> movie -> release -> date)creates a highly specific and compound nominal concept.
Understanding this grammatical function is vital because it establishes the keyword as the central subject or object within a sentence. In writing, it should be treated as a "thing" or concept. For example, the phrase can serve as the subject ("The Patriots Day movie release date was in 2017.") or the object ("The article announced the Patriots Day movie release date."). This ensures that the article is properly structured to provide information about this specific entity.