This is the 1435th most frequent German word.
lufthansa
Lufthansa: The name of Germany's largest airline.
Here, 'Lufthansa' functions as the proper noun referring to the airline company in German.
Ich habe einen Flug mit Lufthansa gebucht.
I booked a flight with Lufthansa.
In this example, 'Lufthansa' is used as the subject of the sentence, specifically as the name of a major European airline company.
Lufthansa ist eine der größten Fluggesellschaften in Europa.
Lufthansa is one of the largest airlines in Europe.
In this sentence, 'Lufthansa' is mentioned as the name of the employer organization in a prepositional phrase.