The keyword phrase "Google Gemini" functions as a proper noun. It is the specific, capitalized name of a particular entitya family of multimodal large language models developed by Google. As a proper noun, it uniquely identifies a product, distinguishing it from general or common nouns that refer to a class of things (e.g., "language model").
Grammatically, the phrase is a compound noun. "Google," itself a proper noun, acts as a noun adjunct or attributive noun, modifying the head noun "Gemini." This structure specifies the brand or origin of the product. The two words operate as a single lexical unit to name the AI model, similar to other branded product names like "Microsoft Windows" or "Tesla Model S." It is treated as a singular subject in sentences, requiring singular verb agreement (e.g., "Google Gemini is powerful," not "are powerful").
Identifying the term as a proper noun is critical for an article's clarity and grammatical correctness. This classification dictates that the term must be capitalized consistently. Furthermore, it clarifies its function within a sentence, where it can serve as a subject, a direct object, or an object of a preposition. This understanding ensures the term is treated as a specific, named entity, which is the central point of reference for all related discussion.