Difference between Heir Presumptive and Burggrave

HEIR PRESUMPTIVE vs BURGGRAVE: 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

One who holds a hereditary title, with an associated domain, descended from an ancestor who commanded a burg.
One appointed to the command of a burg (fortress or castle).
Originally, one appointed to the command of a burg (fortress or castle); but the title afterward became hereditary, with a domain attached.
See burgrave, burgravess.

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

Vicontiel, Hohenzollern, Burg, Princekin, Castellany, Burghermaster, Burgrave, Grand duchess, Waldgrave, Archdukedom, Earl marshal, Landgraviate, Archduchy, Starosty, Holy roman empire

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

Seignior, Toparch, Vicontiel, Hohenzollern, Princekin, Castellany, Burghermaster, Grand duchess, Waldgrave, Archdukedom, Earl marshal, Landgraviate, Archduchy, Starosty, Holy roman empire

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.