<![CDATA[Noun phrases are an important element in sentences because they can fill almost all elements of a sentence except the verb (V). In addition to their role in grammar, noun phrases are also often used in psychological marketing in advertising texts to attract consumers persuasively. This research aims to analyze the structure and function of noun phrases found in captions. The data were obtained from captions of restaurant accounts taken directly from Instagram from April to September 2025. This research used a qualitative research design. The data were identified and classified based on syntactic theory to determine their patterns and functional roles. The results show that the simplest structure of a noun phrase is Noun (N), and the most complex structure is Det + Adj + N + PP. In addition, it was found that the grammatical functions of noun phrases include subject, object, complement, prepositional complement, appositive, and adverbial. This research concludes that the relationship between the varied NP structure and its dominant function as an object creates an efficient yet informative communication pattern. This proves that the linguistic structure in Instagram captions is not just a random string of words, but a strategic tool designed to capture the user’s attention. In conclusion, the effectiveness of a message depends on how the noun structure is arranged to function as something persuasive and rich in meaning. By understanding this pattern, it can be seen that every word in the caption has the goal of turning readers’ interest into real action.]]>
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