1, the concept of rank emphasizes political and legal status, and the concept of class emphasizes people's economic status in society.

2. Grade emphasizes the difference of education level, while class emphasizes the opposition between the two classes.

3. Level should be the level of effectiveness, which refers to the level of effectiveness of normative documents. The state is a tool for the economic ruling class to carry out class rule, and class nature is the fundamental attribute of the state. Class reflects the progress of civilization.

4. In a class society, people's ideology must have class characteristics, which are determined by people's class status and reflect the special interests and requirements of this class. In class society, the essence of politics is class relationship and class struggle, and class nature is the fundamental attribute of politics. In essence, the state is a tool for the economically dominant class to carry out class rule, and class nature is the fundamental attribute of the state.