This paper examined the vocabulary of Kim Hae-song's song to understand the characteristics of vocabulary use in the lyrics of the 1930s. Kim Hae-song was a singer, songwriter, and performer representing the 1930s. Since he wrote lyrics in various fields regardless of the genre of music, he can grasp the phenomenon of language and culture in the 1930s through his vocabulary of lyrics.
 First, the use of vocabulary in Kim Hae-song's song was examined. The lyrics of Kim Hae-song's song have various vocabulary reflecting the language and cultural phenomena of the 1930s. In this era, traditionally, not only Chinese characters close to the superstrum and native languages corresponding to the substratum were mixed, but also Japanese was forced against one’s will. On the other hand, due to the influx of Western culture, Western languages, including English, have flooded in. The vocabulary of Kim Hae-song's lyrics also reflects the situation of the times, taking on complexity. In other words, native, Chinese, and foreign languages are used in combination in the lyrics of Kim Hae-song's song.
 Second, the vocabulary expression aspect of Kim Hae-song's song was examined. Kim Hae-song's lyrics were diverse by reflecting the language culture of the times. This is because it was necessary to select such a vocabulary and express the object convincingly. It can be divided into descriptive expressions of characters, figurative expressions of love, and playful expressions of objects. Descriptive expressions of characters were expressed as if they were describing characters aiming for old and new culture as in narrative literature. In the figurative expression of love, the expression of affection was not dealt directly, but the emotion of love was added to the image of the audiovisual by comparing it to the object. In the playful expression of the object, the lyrics are added with fun through the method of humor and joke.
 Third, the language-cultural phenomenon of the vocabulary of Kim Hae-song’s song was surveyed. Representative examples include the expansion of awareness of everyday language, universal use of negative expressions, and ambivalent attitudes toward old and new culture. It can be said that the expansion of awareness of everyday language was established when the words of the time encountered a new language. In the universal use of negative expressions, in a society at the time when old and new cultures were mixed, those who value tradition disapproved of admiring Western culture, and those who pursue Western culture could criticize those who adhere to traditional culture, so negative expressions were commonly used. The ambivalent attitude toward the object is generally treated negatively for tradition, but it is concentrated on women, and it is often positive for Western culture, and in that case, it is common to evaluate men positively.
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