Imbalance
Part of speech: noun
Definition: The property of not being in balance.
Unbalance
Part of speech: verb
Definition: To cause to be out of balance.
Imbalance as a noun is the property of not being in balance. while Unbalance as a verb is to cause to be out of balance.
Part of speech: noun
Definition: The property of not being in balance.
Part of speech: verb
Definition: To cause to be out of balance.
We hope you now know whether to use Imbalance or Unbalance in your sentence.