Language/French/Grammar/Plural-of-words-in-"Al"

In French, the words in -al have their plural in -aux.

But there are some exceptions whose the plural is -als. There are 9 words:

1. Chacal = Chacals / {Jackal}
2. Aval = Avals / {Downstream}
3. Bal = Bals / {Bal}
4. Carnaval = Carnavals / {Carnival}
5. Corral = Corrals / {Corral}
6. Récital = Récitals / {Recital}
7. Régal = Régals / {Treat, Delight}
8. Festival = Festivals / {Festival}
9. Final =Finals / {Final}