Wherein the party of the first part hereby confuses the party of the second part.
The legal equivalent of calling something fundamentally illegal because it violates the constitution—the supreme law of the land. When courts declare something unconstitutional, they're basically saying "that law is so wrong it contradicts our most basic principles." It's the ultimate trump card in legal arguments, assuming you can convince judges you're right.
When a higher court agrees with a lower court's decision, essentially saying "yeah, they got it right the first time" and dashing the hopes of whoever appealed. It's the judicial equivalent of your boss backing up your manager's decision after you complained to HR. Once upheld, the original ruling stands and everyone moves on (whether they like it or not).
Actions beyond the legal authority or power of a corporation or public body, Latin for 'you can't do that.' The legal version of a kid trying to use their parent's credit card without permission.