This is the 11411th most frequent Portuguese word.
nigerino
"Nigerino" refers to something or someone from Niger (a country in West Africa).
Here, 'nigerino' is an adjective describing the student's nationality, indicating that they are from Niger.
O estudante nigerino apresentou um relatório sobre o desenvolvimento do Níger.
The Nigerien student presented a report on the development of Niger.
In this sentence, 'nigerina' is an adjective referring to the cuisine of Niger, characterizing the type of food.
A culinária nigerina é rica em sabores e tradições.
Nigerien cuisine is rich in flavors and traditions.
Here, 'nigerino' is used as a noun to refer to a person from Niger.