Scientists described phonology based on their research field. Based on Aprilia, (2025) they concluded phonology as a subfield of linguistics that studies the sound of language. The study phonology involved the study of sounds language in general and its function. Those statement could be meant to describe phonology as the field of linguistic means that it is a special field within the broader study of language. Phonology examined how speech sound was organized, patterned, and use in human language and how these sounds function to create meaning and distinguish word in a language. Other source cited by according to the best book on Ramadhani (2024) stated that one of the linguistic knowledges in this area is called the phonology of the sounds of the language teaching system (phonemes). The research focuses on the analysis and classification of spoken language and the rules regulating its use. According to Widi in (Asiva Noor Rachmayani, 2015) phonology involves the study of spoken language as a whole. Widi said that phonology is a language of branched knowledge. It means phonology is a specialized field. A separate branch of the broader study language (linguistic) with special emphasis on the phonetic system of languages. By studying spoken language “as a whole,” phonology studies the systematic functioning of the sounds in language, including their production, perception, and organization. Essentially, Widi emphasizes that phonology is not a monolithic subject, but a structured and multifaceted discipline dedicated to understanding the auditory aspects of human language. According to Abdul Chai (in aprilia, 2025) the term of “phonology” comes from the word “phong” which means “sound” and “logi” which means “science.” Therefore, it can be simply said that phonology is linguistic knowledge that studies the entire sound of language. Phonology comes from telephone that have meaning is sound and logos have meaning science. In other word, phonology refers to knowledge about sounds. Roger Lass, in Ahmad, Krisanjaya and Chaer, (in Aprilia, 2025) stated that phonology is the language of knowledge of the subfield that studies functional sounds. This means that phonology studies the sounds of the language, both the sounds used for pronunciation and the sounds of the language as a whole. Phonology is the branch of linguistic that studies sound as a phenomenon in human physiology, anatomy, psychology, and neuroscience. . The conclution is?