Three Layers of Modeling

The concept model is actually expressed by an analysis model. The three layers of modeling: business model, conceptual model, and design model correspond to the three main model groups in modeling: business Case model (including business case, business case implementation, Business Object Model), concept model (concept case, concept case implementation, analysis model) design Model (system use case, system use case implementation, implementation class model ). Here, when I write a book, I ignore the difference between modeling layers and modeling models, which leads to misunderstandings between the two words. Thank you for your correction!
Another problem is that an analysis class is a classification of classes. It contains the boundary class, control class, and entity class. In fact, the bounds, controls, and entities are both types of analysis classes.