Difference between Heir Apparent and Interrex

HEIR APPARENT vs INTERREX: NOUN

Someone who will definitely inherit if surviving the one whose property is to be inherited.
An heir who will inherit the ancestor's estate, title, or office as long as the ancestor does not exclude the heir in any will and the heir survives the ancestor.
An heir whose right to an inheritance cannot be defeated if that person outlives the ancestor

A similar interim ruler, CEO etc.
An equivalent regent from the death of a Polish king till the election and enthronement of his successor.
An official in Ancient Rome, who acted as single head of state during the interregnum between two consulates.
An interregent, or a regent.
In ancient Rome, a regent; a magistrate who governed during an interregnum.

Inheritor, Protege, Dethrone, Coronation, Succession, Confidant, Throne, Kingmaker, Princeling, Prince regent, Figurehead, Frontrunner, Heir presumptive, Heir, Successor

Election, Regnative, Superordination, Viceregent, Academic administrator, Minister of state, Chief of state, Prorector, Preconization, Member of parliament, Pontificality, Preconize, Apocrisiarius, Interregnum, Interregent

Understudy, Protege, Dethrone, Coronation, Succession, Confidant, Throne, Kingmaker, Princeling, Prince regent, Figurehead, Frontrunner, Heir presumptive, Heir, Successor

Election, Regnative, Superordination, Viceregent, Academic administrator, Minister of state, Chief of state, Prorector, Preconization, Member of parliament, Pontificality, Preconize, Apocrisiarius, Interregnum, Interregent

He was heir-apparent to the throne of borgata casino in atlantic city nj Israel.
The Ming heir apparent will reach all of you in due course.
He was appointed as his father's heir apparent in 2000.
According to Nguni culture, Jorum is the rightful heir apparent.
Prince Charles, a sickly child, now became heir apparent.
Soon, the team starts looking for an heir apparent.
George III, became heir apparent and ultimately king.
Ueved he might really be the heir apparent.
The case of Simon Clark: son and heir of Peter Clark deceased and now heir apparent of the family of Sr.
No person is heir until the death of his ancestor, but before that event is generally called the heir apparent.

Once the interrex found a suitable nominee to the kingship, he would bring the nominee before the Senate and the Senate would review him.