In computing|lang=en terms the difference between virtual and entity
is that
virtual is (computing) in c++, a virtual member function of a class while
entity is (computing) anything about which information or data can be stored in a database; in particular, an organised array or set of individual elements or parts.
As nouns the difference between virtual and entity
is that
virtual is (computing) in c++, a virtual member function of a class while
entity is that which has a distinct existence as an individual unit often used for organisations which have no physical form.
As an adjective virtual
is in effect or essence, if not in fact or reality; imitated, simulated.