Difference between Heir Presumptive and Privy Councillor

HEIR PRESUMPTIVE vs PRIVY COUNCILLOR: 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

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

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

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.

His merit was civilly rewarded, however, when he was made privy councillor and awarded the Cross of the White Falcon.
Her father had once held an important position in Moscow, and had died with the rank of privy councillor.
Privy Councillor, that desertion of officers or soldiers should no longer be capital, nor the belonging to people who called themselves Egyptians.
German Privy Councillor, professor and member of the Academy of Sciences in Berlin.
He was made a K.C.B. and a privy councillor.
He lived to be a Privy Councillor to William of Orange.
Horka, Grandee of Spain of the First Class, Privy Councillor.
Board of Trade and a privy councillor, the first Catholic to do so.
Privy Councillor, but shall not have a seat in the Cabinet.
A Parliamentary Secretary may be sworn in as Privy Councillor.