What is the difference between objects and classes in C#? [duplicate]

Question

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Difference between object and instance

I have couple of questions:

1. Every instance of a class (except an abstract class) is an object?
2. Abstract classes cannot be instantiated, hence they are not objects?

Could anyone help me better understand the above concepts as they relate to C#?

Answer 1

class Cat {} // It is a cat. Just a cat. Class is a general issue.

myCat = new Cat("red", "5kg", "likes milk", "3 years old"); // It is my cat. It is an object. It is really a cat. 

yourCat = new Cat("gary", "3kg", "likes a meal", "5 years old"); // It is your cat. Another cat. Not my cat. It is really a cat too. It is an object;

abstract class Animal {} // Abstract class
animal = new Animal(); // It is not correct. What is 'animal'? Cat, dog, cow? I don't know.

class Dog : Animal {} // It is a class. It is a dog in general. 
someDog = new Dog("brown", "10 kg", "likes cats"); // It is really a dog. It is an object.