Spanish Word for Jousting: Understanding "Justas"

Okay, so you're asking why "Jousting" translates to justas.

The word justas in Spanish specifically refers to the medieval sport of jousting. It comes from the same Latin root as the English word "joust" (and also "justice" – interesting, right?).

Think of it this way:

• In English, "jousting" is the act or sport.
• In Spanish, justas (often used in the plural, like "the jousts") is the term for that specific event or competition.

It's not a direct, word-for-word cognate in the sense of sound, but it's the established and correct term for that activity in Spanish. There isn't really another common word for it. It's the historical and cultural equivalent.