This is the 312th most frequent Korean word.
내용이
"내용이" means "contents" or "substance."
내용이 is used here to describe the content of the book.
이 책의 내용이 정말 흥미로워요.
The content of this book is really interesting.
내용이 refers to the narrative or story details of the movie.
영화 내용이 감동적이었어요.
The content of the movie was touching.
내용이 highlights the knowledge or information being taught in the class.