This is the 369th most frequent Portuguese word.
andré
"André" is a Portuguese given name, equivalent to "Andrew" in English.
In this sentence, 'André' is a proper noun, specifically a personal name used as the subject of the verb 'está'.
André está estudando para o exame amanhã.
André is studying for the exam tomorrow.
In this instance, 'André' is a proper noun serving as the subject to which the action or description pertains.
O comportamento de André é sempre exemplar.
André's behavior is always exemplary.
Here, 'André' is again a proper noun, used to identify a specific person's name in a descriptive context.