Park, Eunha. (2023). “Analysis of Language Use and Characteristics of Korean Bestseller Book Titles over the Past Five Years”. The Sociolinguistic Journal of Korea, 31(4), 175-201. This study analyzed linguistic composition of titles of recent best-selling books in online bookstores over the past five years. Additionally, we sought to understand the characteristics and social aspects of the words appearing in the book. The results of the analysis of the composition of book names show that the number of book titles written in Hangul or with Hangul and numbers was the most common over the past five years. In terms of length, the book titles were most frequently between four and eight syllables long. The most frequent names utilized nouns or noun phrases, followed by full sentences, and the plain-type Haerache ranked third. As a result of analyzing the words in the title of the books, when the title of the book over the past five years was displayed in Wordcloud, the words in the TOEIC test books and the title of the comic books were visualized in large format. As a result of examining the frequency of words in Boyant-tool, the number of numbers(1, 2) that did not appear in Wordcloud was the highest, followed by words from TOEIC test books and comic books.