Difference between Insane and Unsound

INSANE vs UNSOUND: ADJECTIVE

Used by, or appropriated to, insane persons.
Very foolish; absurd.
Immoderate; wild.
Having been determined to be in a condition that meets the legal definition of insanity.
Intended for use by such persons.
Characteristic of or associated with persons who are mentally deranged.
Of, exhibiting, or afflicted with mental derangement. Not used in psychiatric diagnosis.
Afflicted with or characteristic of mental derangement
Exhibiting unsoundness or disorder of mind; not sane; mad; deranged in mind; delirious; distracted. See insanity, 2.
Causing insanity or madness.
Characterized by insanity or the utmost folly; chimerical; unpractical
Very foolish

Synonyms Crazed, lunatic, demented, maniacal.
Making insane; causing insanity.
Devoted to the use or care of the insane: as, an insane asylum.
Characteristic of a person mentally deranged; hence, wild; insensate; senseless.
Not sane; unsound or deranged in mind; crazy.

Nutty, Schizophrenic, Paranoid, Loony, Batty, Maniac, Psychotic, Unhinged, Deranged, Demented, Idiotic, Mad, Bonkers, Lunatic, Crazy

Corroded, Speculative, Insecure, Dilapidated, Rotted, Bad, Rotten, Unhealthy, Insane, Unreliable, Risky, Invalid, Fallacious, Unstable, Unfit

Nutty, Schizophrenic, Paranoid, Loony, Batty, Maniac, Psychotic, Unhinged, Deranged, Demented, Idiotic, Mad, Bonkers, Lunatic, Crazy

Corroded, Speculative, Insecure, Dilapidated, Rotted, Bad, Rotten, Unhealthy, Insane, Unreliable, Risky, Invalid, Fallacious, Unstable, Unfit

This whole situation is insane and quite frankly is making me insane.
This is one insane quest fit for one insane faction of isolated geniuses.
Even if not deemed legally insane, a serial killer is certainly morally and ethnically insane.
If you want to demonstrate that someone is insane, then they gotta fucking look insane.
He acts insane but tries to insist I am the one who is insane.
Do people living through insane times realize just how insane that time is?
Asa was insane; but Asa was insane because the deed itself was insane.
Finally, I went insane, and not the good kind of insane either.
The people are all insane, the other animals are all insane, the earth is insane, Nature itself is insane.
Insane stunting circuits, insane jumps, insane speeds: Trackmania Turbo has it all.

We find this approach unsound for two reasons.
However, valid arguments may be sound or unsound.
But such a view would also be unsound.
The petitioner has been of an unsound mind.
Proposed Tax Legislation Is Economically Unsound and Confusing.
As the concrete deteriorates, it becomes structurally unsound.
Unsound closes with a spotlight on Bocian Records.
Applicant must not be of an unsound mind.
This diffusion of responsibility is unsound and unwise.
Persons of unsound mind The agreement with a person of unsound mind in India, is void.