Explanation:

- Fiscal Deficit: This is when a government's total expenditures surpass its total revenue, excluding borrowing. This is generally regarded as the indication of how much the government needs to borrow to meet its expenses.

- Current Account Deficit: This refers to a situation where a country's total imports of goods, services, and transfers are greater than its total export revenues. It is related to the balance of payments and not directly related to government budget spending.

- Budgetary Deficit: This is a general term that may refer to any situation where expenses exceed revenue. However, it is not the specific term describing the difference excluding borrowings.

- Revenue Deficit: This occurs when there's a shortfall in the government's net income or revenue receipts when compared to the revenue expenditure.