Abstract method vs Virtual method

Abstract method	Virtual method
1) Abstract method doesn’t have any body defined.	1) Virtual method have their body defined otherwise it will give compile-time error message “<VirtualMethod()> must declare body because it is not defined abstract, extern, or partial.
2) Mandatory to implement them.	2) Not mandatory to override them.
3) They can be defined in abstract classes only.	3) They can be defined in any instance class.