These earnings are holdings from the net income but or not included in the total profit of the company whereas these retained earning or hold back earnings are kept for future security where this secured amount is used as investment for future growth of the company or to realize the loans or debts of the company.
Retained earnings are not kept as personal profit of one share holder but is used to invest.
It is clearly mentioned in the balance sheet of the company that it has retained certain amount for future investment or to clear certain debts.
You can find retained earnings under shareholders equity section of the balance sheet.
The concept of retained earnings is not new to the world some called it savings and others call it extra cash holding for future investment.
Therefore, it is good that company already hold certain amount with themselves so they don’t have to look for investors to invest for every single task they pursue.