What is the difference between Ethical and Psychological Egoi‌‍‍‍‌‍‍‌‌‌‍‌‍‍‍‍‌‍‌‌sm?

Type the question and answer: What is the difference between Ethical and Psychological Egoi‌‍‍‍‌‍‍‌‌‌‍‌‍‍‍‍‌‍‌‌sm? Illustrate your answer with your own example. Some scholars claim that Ethical Egoism is compatible with our moral standards. Do you agree? Why do some scholars claim that Ethical Egoism involves inconsistency? What is your opinion‌‍‍‍‌‍‍‌‌‌‍‌‍‍‍‍‌‍‌‌?