Caste:

is a rigid class distinction based on birth or wealth.
systems are flexible class systems.
refers to a system of stratification first developed in feudal Europe.
systems are never clear-cut distinctions.

Caste systems are a rigid class distinction based on birth or wealth, whereas class systems are more flexible and allow for social mobility. Caste systems are often associated with South Asia, where individuals are assigned a specific social status at birth that cannot be changed. Class systems, on the other hand, allow individuals to move between social classes based on factors such as education, occupation, and income. While caste systems are clear-cut distinctions with little room for movement, class systems are more fluid and open to change.