This is the 2013th most frequent French word.
bujumbura
"Bujumbura" is not a French word; it is the name of the former capital city of Burundi.
'Bujumbura' is used as a proper noun referring to the capital city of Burundi.
Je suis allé à Bujumbura en vacances l'année dernière.
I went to Bujumbura on vacation last year.
'Bujumbura' is used as a subject in the sentence, describing a characteristic of the city.
Bujumbura est connue pour ses plages sur le lac Tanganyika.
Bujumbura is known for its beaches on Lake Tanganyika.
'Bujumbura' is used to identify the specific location or context of the cultural aspect being discussed.