Tragedy of the Commons:A situation in which individuals, acting independently and rationally according to their own self-interest, will ultimately deplete or destroy a shared resource, even when it is not in anyone's long-term interest for this to happen.
Collective Action Problem: A situation where individuals fail to cooperate to achieve a mutually beneficial outcome, even though cooperation would be in the best interest of the group as a whole.
Free-Rider Problem: A situation where individuals benefit from resources, goods, or services without paying their fair share or contributing to the cost of their production.