Difference between Heir Presumptive and Peacock Throne

HEIR PRESUMPTIVE vs PEACOCK THRONE: NOUN

Someone who will inherit only if no better choice for an heir is born.
See heir apparent.
An heir who stands to inherit the estate, title, or office of an intestate ancestor, but whose claim can be defeated if a relative who is closer to the ancestor is born prior to the ancestor's death.
A person who expects to inherit but whose right can be defeated by the birth of a nearer relative

The golden throne of former kings of Delhi; stolen by the Persians in 1739 and subsequently lost; symbol of the former Shah of Iran

The office or position of the Shah of Iran.
A famous throne formerly of the kings of Delhi, India, but since 1739, when it was carried off by Nadir Shah, held by the shahs of Persia (now Iran); -- so called from its bearing a fully expanded peacock's tail done in gems.

Succession, Peacock throne, Kingship, Dynastic, King, Prince consort, Princeling, Monarch, Figurehead, Prince regent, Coronation, Heir, Successor, Throne, Heir apparent

Achaemenian, Monarchy, Abbasid, Seljuk, Caliph, Grand vizier, Imamate, Sassanid, Umayyad, Sassanian, Persian empire, Mughal, Pahlavi, Khomeini, Shah

Succession, Peacock throne, Kingship, Dynastic, King, Prince consort, Princeling, Monarch, Figurehead, Prince regent, Coronation, Heir, Successor, Throne, Heir apparent

Achaemenian, Monarchy, Abbasid, Seljuk, Caliph, Grand vizier, Imamate, Sassanid, Umayyad, Sassanian, Persian empire, Mughal, Pahlavi, Khomeini, Shah

He is the son of Eliwood, the main character of Fire Emblem: The Blazing Blade, and heir presumptive of Pherae.
Frenchman, that he is not heir presumptive to another crown, and that he has previously taken the civic oath.
Prince Albert became King George VI and the young Princess Elizabeth became heir presumptive to the throne.
Known as "The Brat" in the Heraldic Circle, the Heir-presumptive lives up to her nickname.
Roger was made lieutenant of Ireland and was declared heir presumptive to the Crown.

It was once the eye of an Indian idol, and afterward one of the ornaments of the celebrated peacock throne of Nadir Shah.
On both sides of the peacock throne was a screen, on which were the figures of two angels in precious stones.