das Stockwerk
floor
A floor or story in a building that is located above or below the ground floor.
Unsere Wohnung liegt im vierten Stockwerk, zum Glück gibt es einen Aufzug.
Our apartment is on the fourth floor; luckily, there is an elevator.

floor
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floor
A floor or story in a building that is located above or below the ground floor.
Unsere Wohnung liegt im vierten Stockwerk, zum Glück gibt es einen Aufzug.
Our apartment is on the fourth floor; luckily, there is an elevator.

The word is made up of 'Stock' and 'Werk'. Here, 'Stock' is an old word for a level or floor, and 'Werk' refers to the building construction.
Das Gebäude hat insgesamt acht Stockwerke.
The building has eight floors in total.
Pay attention to the case: 'im Stockwerk' (on the floor) with the dative describes a place, while 'ins Stockwerk' (to/into the floor) with the accusative expresses movement or direction.
Das Büro befindet sich im dritten Stockwerk.
The office is located on the third floor.
Especially in Austria, people often simply use 'der Stock' instead of 'das Stockwerk' to refer to a floor.
Ich wohne im zweiten Stock.
I live on the second floor.
plain / level
'Ebene' and 'Stockwerk' can both mean a level in a building. 'Stockwerk' is the normal word when talking about houses, apartments, or offices. 'Ebene' is used more when a building is seen as a system with several levels, for example in a parking garage, train station, or shopping center. Learners may confuse the words because both work similarly in buildings. In everyday life, people usually ask about the 'Stockwerk'; on signs or maps, you often see 'Ebene'.

Nach dem Gespräch wartet ihr Nachbar im zweiten Stockwerk.
After the conversation, her neighbor is waiting on the second floor.
Sie finden die Arztpraxis auf Ebene 4, direkt neben dem Aufzug.
You will find the doctor's office on Level 4, right next to the elevator.