das Hochhaus
high-rise
A very tall building with many floors, used mainly for apartments or offices.
In Frankfurt am Main stehen viele beeindruckende Hochhäuser.
There are many impressive high-rises in Frankfurt am Main.

high-rise
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high-rise
A very tall building with many floors, used mainly for apartments or offices.
In Frankfurt am Main stehen viele beeindruckende Hochhäuser.
There are many impressive high-rises in Frankfurt am Main.

The word 'Hochhaus' (high-rise) is a simple compound made from the adjective 'hoch' (high/tall) and the noun 'das Haus' (house). So it literally means a 'tall house'.
Vom Flugzeug aus sahen die Hochhäuser wie kleine Bauklötze aus.
From the airplane, the high-rises looked like small building blocks.
Pay attention to the prepositions: If you are inside the building, you live 'im Hochhaus' (in the high-rise; dative). If you are moving toward it, you go 'ins Hochhaus' (into the high-rise; accusative).
Meine Tante wohnt im zwanzigsten Stock von diesem Hochhaus.
My aunt lives on the twentieth floor of this high-rise.
Common verbs in connection with 'Hochhaus' are 'ein Hochhaus bauen' (to build a high-rise), 'in einem Hochhaus wohnen' (to live in a high-rise), or 'ein Hochhaus entwerfen' (to design a high-rise).
Die Firma plant, ein neues Hochhaus im Stadtzentrum zu bauen.
The company is planning to build a new high-rise in the city center.
tower
'der Turm' and 'das Hochhaus' can both be tall buildings. 'Turm' means a tall, rather narrow structure and often fits churches, castles, lookout points, or special parts of buildings. 'Hochhaus' means a very tall building with many floors where people live or work. Learners may confuse the words because some modern buildings look like towers. When you mean a normal apartment or office building with many floors, 'Hochhaus' is more precise. For a church, castle, or observation structure, 'Turm' fits better.

Im Bus zeigt die Kundin auf das Hochhaus, in dem ihre Schwester wohnt.
On the bus, the customer points to the high-rise where her sister lives.
Am Abend sind die Gäste auf den Turm gestiegen und haben die Lichter der Stadt gesehen.
In the evening, the guests climbed the tower and saw the city lights.