This is the 8719th most frequent Portuguese word.
alentejanos
"Alentejanos" refers to people or things from the Alentejo region of Portugal.
Here, 'alentejanos' is used to refer to the people of Alentejo, a region in Portugal, emphasizing their characteristic behavior.
Os alentejanos são conhecidos pela sua hospitalidade.
The Alentejanos are known for their hospitality.
In this case, 'alentejana' is an adjective derived from 'alentejanos', describing something (here, cuisine) related to the Alentejo region.
Comida alentejana é uma das mais apreciadas em Portugal.
Alentejano cuisine is one of the most appreciated in Portugal.
The word 'alentejano' is functioning as an adjective to describe a specific type of accent typical to the Alentejo region.