Def revenue = money received for workservices unperformed, you haven't actually EARNED the money but you have received therefore it is a liability
Deferred expense = money you paid for something in advance of receiving benefitproduct. Best example is general liability insurance, you pay an annual premium for a year worth of insurance and you expense a portion of it monthly while the balance of the premium paid sits in an asset account.
Accrued expense = the opposite of deferred expense. This typically happens at monthyear end, for example you know you received some inventory but you have not received the invoice from the supplier, so you have to accrue the expense on your books to recognize the expense. This is a liability to the company = money due not yet paid.
Current liability, is just how it sounds it is current and due in the current period or within 12 months, if the due date extends beyond 12 months then it is not current.
I hope this helps a little.
BEC - 66, 77 (3/14* expired), 82 (11/15)
AUD - 58 (4/14), 76 (8/14)
REG - 75 (6/14)
FAR - 72 (11/14), 67 (1/15), 68 (5/15), 68 (7/15), 80!!!! (11/15)
Licensed Florida CPA. God is Good!!