What do "azul" and "sablevolant" have to do with Pokemon with mega evolutions?

Question

It seems that all the codes but these two refer to something about their corresponding mega stones.
M2DESCENT: "M2" can be an abbreviation of Mewtwo.
INTIMIDATE: one of Mawile's abilities
MATSUBUSA: Japanese name of notable NPC whose signature Pokemon was Camerupt
POYONG: Gardevoir's category name in Korean
So what about "AZUL" and "SABLEVOLANT"? Please don't question my curiosity.

Answer 1

Well, Azul means Blue in Spanish, and Mega Heracross is blue, so that explains AZUL

SABLEVOLANT however, is a little more complicated. Sable is actually a Marten, which is a small mammal native to Japan and Siberia, looking similar to Mega Manectric. Volant means "to fly" in Latin, and the only Mega Pokemon of the 4 that looks like it can fly is Mega Tyranitar, as it has wings.

That's all the information that I have, someone can edit this answer if they have anything to add.

Comments

https://bulbapedia.bulbagarden.net/wiki/Sand_Stream_(Ability)#In_other_languages

Notice what the French name of this ability is.