This is the 6673rd most frequent Russian word.
nissan
The word "nissan" is not Russian; it is a Japanese brand name for an automobile manufacturer.
In this sentence, 'Ниссан' is used as a proper noun referring to the car brand Nissan.
Я купил вчера новый автомобиль марки Ниссан.
I bought a new Nissan car yesterday.
Here, 'Ниссан' is used to designate the company that produces vehicles, emphasizing its role as a manufacturer.
Ниссан производит множество моделей автомобилей, подходящих для разных нужд.
Nissan manufactures a variety of car models suitable for different needs.
In this context, 'Ниссана' is a possessive form of 'Ниссан,' used to describe something related to the Nissan brand, specifically a service center.