The difference between Unbalanced and Unstable

When used as adjectives, unbalanced means not balanced, without equilibrium, whereas unstable means having a strong tendency to change.

Unstable is also verb with the meaning: to release (an animal) from a stable.

check bellow for the other definitions of Unbalanced and Unstable

Unbalanced as an adjective:

not balanced, without equilibrium; dizzy
Unbalanced as an adjective:

irrational or mentally deranged
Unbalanced as an adjective (accounting):

not adjusted such that debit and credit correspond
Unbalanced as an adjective (computing):

of an expression having different numbers of left and right parentheses
Unbalanced as an adjective (American football):

an offensive line with more players on one side of the center than on the other

Unstable as an adjective:

Having a strong tendency to change.
Unstable as an adjective:

Fluctuating; not constant.
Unstable as an adjective:

Fickle.
Unstable as an adjective:

Unpredictable.
Unstable as an adjective (chemistry):

Readily decomposable.
Unstable as an adjective (physics):

Radioactive, especially with a short half-life.

Unstable as a verb (transitive):

To release (an animal) from a stable.