This is the 8109th most frequent Turkish word.
lufthansa
"Lufthansa" is not a Turkish word; it is the name of a German airline.
In this sentence, 'Lufthansa' is used as a proper noun, indicating the name of a specific airline company.
Lufthansa, Almanya'nın en büyük havayolu şirketidir.
Lufthansa is Germany's largest airline company.
Here, 'Lufthansa' refers to the provider of a service, namely an airline, to emphasize the practical use of the company.
Geçen yaz Lufthansa ile Avrupa'ya seyahat ettik.
Last summer, we traveled to Europe with Lufthansa.
In this instance, 'Lufthansa' is used possessively ('Lufthansa'nın') to refer to an aspect of the company, contextualizing it as a brand entity.