I suspect that this is just "out of bounds", but what happens when a receiver catches a pass and has two feet out of the end zone at the far end? Is this just out of bounds or is there more forgiveness in the end zone?
What happens if a receiver is beyond the end zone in football? I suspect that this is just "out of bounds"
Your suspicions are accurate.
What happens when a receiver catches a pass and has two feet out of the end zone at the far end?
A player who catches a pass and has two feet out of the end zone at the far end had either touched a boundary line or touched outside a boundary line, and thus, is out of bounds.
Rule 3, Section 22, Article 1 in the NFL Rule Book addresses this (emphasis mine).
A player or an Official is Out of Bounds when he touches:
(a) A boundary line; or
(b) Anything other than a player, an official, or a pylon on or outside a boundary line.
Rule 2, Section 12, Article 4 in the NCAA Football Rule Book addresses this (in a clearer fashion, in my opinion).
ARTICLE 4. The boundary lines are the sidelines and the end lines. The area enclosed by the boundary lines is “in bounds,’’ and the area surrounding and including the boundary lines is “out of bounds.’’
edmastermind29's answer is correct, save an exception.
If a receiver catches the ball but is carried out by a defender before he can land both feet inbounds, the pass is complete.
Rule 8, Section 1, Article 3, Item 6 in the NFL Rule Book addresses this.
Carried Out of Bounds: If a player, who is in possession of the ball, is held up and carried out of bounds by an opponent before both feet or any part of his body other than his hands touches the ground inbounds, it is a completed or intercepted pass.
NCAA (college) rules are slightly different--the player needs only one foot to make contact inbounds for the completion.
Rule 2, Section 4, Article 1 of the NCAA Football Rulebook:
Player Possession: The ball is in player possession when a player has the ball firmly in his grasp by holding or controlling it while contacting the ground inbounds.
Regarding the Carried Out of Bounds rule from the NFL, I could not find any references that suggests this also applies in college.