What are the differences between estoppel by negligence and estoppel by representation?

Estoppel by representation occurs when one party makes a false statement or representation that another party relies on to their detriment. Estoppel by negligence, on the other hand, arises when a party fails to exercise due diligence or care in a situation and the other party suffers harm as a result. In estoppel by negligence, the focus is on the negligent actions or inactions of the party rather than a deliberate misrepresentation.