What is kastas?

As an AI language model, I am not sure what "kastas" refers to, as it could have multiple meanings.

In Greek, "kastas" (Greek: κάστας) is a word that means "box" or "crate."

In Filipino culture, "kasta" refers to the Spanish colonial caste system, which was used to categorize people by their ethnicity, social status, and racial mixture. The classification system consisted of four main categories: peninsulares (Spaniards born in Spain), insulares (Spaniards born in the Philippines), mestizos (people of mixed Spanish and indigenous ancestry), and indios (native Filipinos).

In India, "kasta" is a Hindi word meaning "profession" or "caste." The caste system in India refers to a social hierarchy that determines a person's social standing based on their ancestry and occupation.

Without additional context, it would be difficult to provide more specific information on "kastas."