Deadline vs. Overdue

Deadline and Overdue Definitions
Deadline
A time limit, as for payment of a debt or completion of an assignment.
Overdue
Being unpaid when due
An overdue bill.
Deadline
A boundary line in a prison that prisoners can cross only at the risk of being shot.
Overdue
Coming or arriving after the scheduled or expected time
An overdue train.
Deadline
To govern by setting a time limit
"He was never going to be deadlined by a day, or even a month" (New Yorker).
Overdue
Expected or required but not yet having come about
An overdue apology.
ADVERTISEMENT
Deadline
A time limit in the form of a date on or before which something must be completed.
I must make this deadline or my boss will kill me!
Overdue
Late; especially, past a deadline or too late to fulfill a need.
His library books were three days overdue;
My car is overdue for an oil change;
She finally left on a long overdue vacation
Deadline
(archaic) A guideline marked on a plate for a printing press.
Overdue
Due and more than due; delayed beyond the proper time of arrival, payment, return, etc.; as, an overdue vessel; an overdue note; a book overdue at the library; an overdue payment.
Deadline
(archaic) A line that does not move. en
Overdue
Past due; not paid at the scheduled time;
An overdue installment
A delinquent account
ADVERTISEMENT
Deadline
(archaic) A boundary around a prison, prisoners crossing which would be shot.
Deadline
(military) To render an item non-mission-capable; to ground an aircraft, etc.
Deadline
The point in time at which something must be completed