What's the difference between entity and class?

Question

Is entity an instance of class?

Answer 1

An entity usually refers to something, anything really, that has a unique and separate existence.

In software development this word is almost only used to denote that one instance is different from another instance and they are independent of each other.

A class, on the other hand, defines or contains the definition of an object. Once that object is constructed based on the definition, then you get your instance or object instance.