The character components Cao（艸） and Mu（木） in the Shuowen（说文） could generally not be interchangeable. The component Cao（艸） occasionally can be expressed the concepts about three. However, the component Mu（木） couldn＇t be expressed the concepts about grass. There are no differences between the functions of meaning about the components Cao（艸） and Mu（木） in the oracle system. It shows that the difference of functions between the character components Cao（艸） and Mu（木） has later formed. The difference of functions between th...
