Difference between Heir Presumptive and Descendible

HEIR PRESUMPTIVE vs DESCENDIBLE: 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

Also spelled descendable.
That can descend from an ancestor to a descendant; capable of being transmitted, as from father to son: as, a descendible estate.
Capable of being descended with safety or comparative ease; that permits of a safe downward passage: as, a descendible hill.

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.

It is an estate inheritance unlimited in duration, descendible to all heirs of the owner to the remotest generation.
Hidden Assumption: A Critical Analysis of the Foundations of Descendible Copyright.
The changes are easily descendible in economic activities, polity structures, and social organizations.
New York Legislature to create a broad and descendible right of publicity.