Display of Potential in Accounts

Display of Potential in Accounts

We have faced following issue multiple times. 

When we make Common Search, we find the result of search-word potential in "Accounts" also. So, we understand that there is a duplicate entry of that account. Now when we delete the perceived duplicate account, it deletes potential also. Kindly advise/mark correction on the problem. 

Is it possible to retrieve the deleted record?