https://blog.gongquiz.com/2021/04/04/%ed%94%84%eb%a6%ac%eb%af%b8%ec%96%b4-%ed%94%84%eb%a1%9c-vs-%ed%8c%8c%ec%9d%b4%eb%84%90-%ec%bb%b7-%ed%94%84%eb%a1%9c-%ed%8b%b0%ed%82%a4%ed%8b%b1-%ec%9d%80%ed%83%9d%ea%b3%bc-%ed%95%a8%ea%bb%98/