Red-eye and Redeye

Red-eye verb - Travel on an overnight flight.

Redeye and red-eye are semantically related In some cases you can replace term "Redeye" with "Red-eye", this terms are similar.

Redeye noun - A night flight from which the passengers emerge with eyes red from lack of sleep.

Red-eye and redeye are semantically related in intoxicating topic. You can use "Red-eye" instead a noun "Redeye".