tower
In German, the word 'Turm' is used to describe a tall, narrow structure, typically taller than it is wide. This can include structures such as watchtowers, bell towers, and even towers in a castle. The word is used in a similar way to how 'tower' is used in English.
The tower of the castle is very high.
This phrase uses 'Turm' in a straightforward way to refer to a physical tower belonging to a castle. The subject of the sentence is 'der Turm' (the tower).
They built a tower out of toy blocks.
This sentence uses 'Turm' to describe a structure (a tower) made from a material (toy blocks), demonstrating use in construction context. The subject here is 'sie' (they) and 'einen Turm' (a tower) is the direct object.
He stands on the tower and sees the city.
In this sentence, 'Turm' is used to denote a location - the tower is the place from where the person (er/he) is viewing the city.