actually NTR does mean it has to be cheating and cuking has to be with consent to be considered cuking, now swinging is whenever two groups of people "cuck" each other.
Cheating is when your partner does it behind your back willingly the term "cheat" is there for a reason here, netorare doesn't always mean cheating and cucking doesn't need be consensual, as long as your partner fucks another it falls under cucking.
