Overpopulation
Part of speech: noun
Definition: A situation which occurs when the number of occupants of an area exceeds the ability of that area to provide for those occupants.
Example sentence: I think that, hundreds of years from now, if people invent a technology that we haven't heard of yet, maybe a computer could turn evil. But the future is so uncertain. I don't know what's going to happen five years from now. The reason I say that I don't worry about AI turning evil is the same reason I don't worry about overpopulation on Mars.
Overspill
Part of speech: noun
Definition: That which spills over.