Is class an object in object oriented language? How are Class methods accessed by just name of the class.method name? (internal working). Is this same as a object.method?

And If the Class is same as object (belong to object class which is super class of every thing in OO) and we instantiate it (make object of it), can we make instance of an instance of an class other than Object class.

(Mainly interested in the theoretical perspective even if practically not required ever)

oop class object instance
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