Difference between Impossible and Unimaginable

IMPOSSIBLE vs UNIMAGINABLE: NOUN

Totally unlikely
Used of persons or their behavior
Incapable of having existence or of occurring.
Not capable of being accomplished.
Unacceptable; intolerable.
Extremely difficult to deal with or tolerate.
Not possible; incapable of being done, of existing, etc.; unattainable in the nature of things, or by means at command; insuperably difficult under the circumstances; absurd or impracticable; not feasible.
An imaginary quantity. See Imaginary.
Not possible, not able to be done.
Very difficult to deal with.
Not capable of occurring or being accomplished or dealt with

(used of persons or their behavior) not acceptable or reasonable
Not possible; non-existent or false by necessity.
In law, in a stricter sense, prevented only by the act of God or a public enemy.
Excessively odd; not to have been imagined; such as would not have been thought possible: as, she is a most impossible person; he wears an impossible hat.

Not imaginable; not capable of being imagined, conceived, or thought of; inconceivable.

Insufferable, Unrealizable, Impracticable, Unacceptable, Hopeless, Intolerable, Unworkable, Unimaginable, Unattainable, Unachievable, Unthinkable, Infeasible, Undoable, Unfeasible, Inconceivable

Imaginable, Inexplicable, Conceivable, Unconscionable, Untold, Incomprehensible, Incalculable, Incredible, Unbelievable, Indescribable, Unspeakable, Out of the question, Impossible, Inconceivable, Unthinkable

Insufferable, Unrealizable, Impracticable, Unacceptable, Hopeless, Intolerable, Unworkable, Unimaginable, Unattainable, Unachievable, Unthinkable, Infeasible, Undoable, Unfeasible, Inconceivable

Imaginable, Inexplicable, Conceivable, Unconscionable, Untold, Incomprehensible, Incalculable, Incredible, Unbelievable, Indescribable, Unspeakable, Out of the question, Impossible, Inconceivable, Unthinkable

They may manipulate employees by setting impossible goals.
And now she must make an impossible choice.
SURREY CHAIRMAN The journey was at times impossible.
Without precise figures, it is impossible to estimate.
It is practically impossible to implement programs independently.
Bathroom door opens in, making wheelchair access impossible.
Therefore living in the UK would be impossible.
It would be impossible fairly to do so.
An important feature: timers that trigger on a certain time are impossible in contracts impossible timers.
Everyone said impossible, they all said it was impossible to get done.

This is an unimaginable tragedy for our agency.
People have experienced such unimaginable loss and pain.
We certainly have affluence that is virtually unimaginable.
Bath orphanage to London society and unimaginable wealth.
She change anything sympathise unimaginable his produce compliment.
The damage caused by such spirits is unimaginable.
The devastation at this time will be unimaginable.
Geordi gasps and strains against an unimaginable pain.
For example: One bird dropping creates unimaginable consequences.
We are anointed to achieve unimaginable feats within unimaginable period of time.