The keyword phrase "patriots day cast melissa benoist" functions as a compound noun phrase. It operates as a single grammatical unit to name a specific person, place, thing, or idea.
This determination is based on the components of the phrase. "Patriots Day" is a proper noun (the title of a film). "Cast" is a collective noun. "Melissa Benoist" is another proper noun (the name of an actress). When combined in this specific order, these words do not contain a verb and do not form a complete sentence. Instead, they work together to pinpoint a precise entity or concept: the specific subject of Melissa Benoist's membership within the group of actors for the film Patriots Day.
Understanding this phrase as a noun is critical for content strategy. It identifies a user's search intent as informational and definitive. The user is seeking facts, not actions or descriptions. Therefore, an article using this keyword should be structured to directly provide factual details about Melissa Benoist's role, character (Katherine Russell), and significance within the film's ensemble, treating the entire keyword as the subject to be defined and explained.
