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The plural of "aula" is "aulas."
El aula generally refers to a classroom
Aula (spanish for "classroom") is "luokka[huone]" (luok - ka - huo - ne) in Finnish. But "aula" in Finnish means lobby or a lounge.
An aula magna is a great hall or classroom used for special occasions at a university.
An aula is a court or hall, or an anatomical term for the anterior part of the third ventricle of the brain.