street
The German word for street is 'Straße'. It is a noun and is used in the same way as the English word 'street'. For example, you might say 'I live on a quiet Straße'.
I live on Bahnhofstraße.
The sentence uses the word 'Straße' to express a physical location or address, which in this case is Bahnhofstraße. In German, prepositions such as 'auf' (on) are used to indicate location.
The street is very narrow.
This sentence uses 'Straße' to describe a characteristic or attribute of a street. Here, 'eng' (narrow) is used as an adjective to describe the street, pointing out a physical characteristic.
The street is full of cars.
Here 'Straße' is used to define a space where certain things or individuals can be found. In this case, it is used to depict a situation where the street is filled with cars.