Elizabeth Warren is a bankruptcy law expert who doesn't know what a corporation is.
From World English Dictionary.a group of people authorized by law to act as a legal personality and having its own powers, duties, and liabilities
From Merriam-Webster
Definition of CORPORATE
1
a : formed into an association and endowed by law with the rights and liabilities of an individual
1 A body that is granted a charter recognizing it as a separate legal entity having its own rights, privileges, and liabilities distinct from those of its members.