Difference between Inviolable and Impregnable

INVIOLABLE vs IMPREGNABLE: ADJECTIVE

That cannot be transgressed or dishonored
Able to withstand attack
Not capable of being violated or infringed
Secure from violation or profanation.
Impregnable to assault or trespass; invincible.
Must be kept sacred
Not violable; not susceptible of hurt, wound, or harm (used with respect to either physical or moral damage); not susceptible of being profaned or corrupted; sacred; holy
Unviolated; uninjured; undefiled; uncorrupted.
Not capable of being broken or violated.
Incapable of being transgressed or dishonored
Immune to attack; incapable of being tampered with
Not violable; not susceptible of violence, or of being profaned or corrupted; incapable of being injured; not to be infringed or dishonoured.

Capable of conceiving
Immune to attack; incapable of being tampered with
Able to withstand attack
Impossible to take by storm
Incapable of being overcome, challenged or refuted
Capable of being impregnated.
Not to be stormed, or taken by assault; incapable of being subdued; able to resist attack; unconquerable
Capable of being impregnated, as the egg of an animal, or the ovule of a plant.
Too strong to be penetrated.

Not to be violated; having a right to or a guaranty of immunity; that is to be kept free from violence or violation of any kind, as infraction, assault, arrest, invasion, profanation, etc.: as, an inviolable peace or oath; inviolable territory; inviolable sanctity.
That cannot be violated; not subject to violence; incapable of being injured.
Immune to attack
Incapable of being tampered with

Not pregnable; not to be taken or reduced by force: as, an impregnable fortress.
Not to be moved, shaken, or overcome; invincible: as, impregnable virtue.
Immune to attack
Incapable of being tampered with

Unattackable, Infrangible, Strong, Secure, Absolute, Invulnerable, Unassailable, Untouchable, Unbreakable, Impregnable, Sacred, Inalienable, Unalienable, Sacrosanct, Inviolate

Impenetrable, Brass, Nigh, Spectacular, Inaccessible, Citadel, Fortified, Unattackable, Inexpugnable, Strong, Secure, Inviolable, Unconquerable, Invulnerable, Unassailable

Unattackable, Infrangible, Strong, Secure, Absolute, Invulnerable, Unassailable, Untouchable, Unbreakable, Impregnable, Sacred, Inalienable, Unalienable, Sacrosanct, Inviolate

Impenetrable, Brass, Nigh, Spectacular, Inaccessible, Citadel, Fortified, Unattackable, Inexpugnable, Strong, Secure, Inviolable, Unconquerable, Invulnerable, Unassailable

Adhering to the moral principle that animal rights are inviolable.
I think human life is inherently valuable, inviolable and unalienable.
Statesa residuary and inviolable sovereignty over all other objects.
Russian Federation to accept unconditionally that borders are inviolable.
At their heart is the inviolable sovereignty of states.
Secrecy of postal, telegraphic, and telephonic communication is inviolable.
Roger Williams advocates the inviolable freedom of faith.
The right to property is inviolable and sacred.
Everyone has the inviolable right to a defence.
Sancire is to render sacred or inviolable by religious act, to appoint as sacred and inviolable.

The Image of Edessa was reputed to render that city impregnable.
The seemingly impregnable city of Jericho fell miraculously into their hands.
The man with no ears and bored eyes looked impregnable.
GAVI Alliance to jointly build an impregnable fortress against pandemic.
This was impregnable, and admitted of neither objection nor restriction.
His high impregnable walls surround us day and night.
Unless all of that comes together, Modi is impregnable.
Right: The Japs tried to build impregnable pill boxes.
Personality, Jesus Christ, is the impregnable fortress of Christianity.
Closed off, the residents of the castle were not simply impregnable, they were totally and utterly impregnable.