Biography is a book that explains scriptures.
The former are The Analects of Confucius and The Spring and Autumn Annals.
The latter is like Three Biographies of the Spring and Autumn Period (biographies of Zuo's family in the Spring and Autumn Period, namely Zuo Zhuan, Gu Liangzhuan in the Spring and Autumn Period and Yang Gongzhuan in the Spring and Autumn Period).