Law
noun, の adjective
Though there's no law about two kanji with the same meaning producing the same meaning, a law law is probably a law.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
もし一ヶ月の間に全法律用語を覚えることができたら、百万ドルお支払いしてもいいですよ。
If you can memorize every legal term within one month, I will pay you a million dollars.