
das Stück
piece
A single part of a larger whole or quantity.
Möchtest du auch ein Stück von meinem Kuchen probieren?
Would you like to try a piece of my cake too?
piece
Loading your saved state.

piece
A single part of a larger whole or quantity.
Möchtest du auch ein Stück von meinem Kuchen probieren?
Would you like to try a piece of my cake too?

item / unit
A single specimen or counting unit for certain goods.
Die Eier kosten 30 Cent das Stück.
The eggs cost 30 cents each.

play
A work written for the stage; a theater play.
Am Wochenende sehen wir uns im Theater ein modernes Stück an.
At the weekend, we are going to see a modern play at the theater.

piece
A musical composition; a piece of music.
Der Pianist spielte als Zugabe ein kurzes Stück von Mozart.
As an encore, the pianist played a short piece by Mozart.

stretch
Part of a route or path.
Wir müssen noch ein ganzes Stück laufen, bis wir am Gipfel sind.
We still have quite a stretch to walk before we reach the summit.

in one stretch
Without interruption; in one single continuous period of time.
Ich habe die ganze Nacht acht Stunden am Stück geschlafen.
I slept eight hours in one stretch all night.

piece by piece
Gradually; step by step.
Das Puzzle wird Stück für Stück zusammengesetzt.
The puzzle is being put together piece by piece.
'Stück' (piece) is often used as a counting word for uncountable things or individual objects. In this function, 'Stück' often remains singular even with numbers greater than one: 'zwei Stück Kuchen' (two pieces of cake), 'drei Stück Obst' (three pieces of fruit).
Ich nehme bitte zwei Stück von diesem Käse.
I’ll take two pieces of this cheese, please.
The meanings 'Theaterstück' (play) and 'Musikstück' (piece of music) are very similar. The context makes the difference clear: verbs like 'aufführen' (to perform), 'inszenieren' (to stage), or nouns like 'Bühne' (stage) and 'Theater' (theater) point to a play. 'Spielen' (to play), 'komponieren' (to compose), 'hören' (to hear/listen to), or instrument names point to a piece of music.
Das Orchester spielte ein unbekanntes Stück von Beethoven.
The orchestra played an unknown piece by Beethoven.
When 'Stück' (piece) refers to a part of something uncountable, the noun often follows directly without an article. You say 'ein Stück Kuchen' (a piece of cake), not 'ein Stück ein Kuchen'.
Kann ich bitte ein Stück Papier haben?
Can I have a piece of paper, please?
In a commercial context, 'Stück' (item/unit) is used to indicate the price for a single item. Typical formulations are 'pro Stück' (per item) or 'das Stück' (each).
Die Äpfel kosten 50 Cent pro Stück.
The apples cost 50 cents each.
When 'Stück' (stretch) describes part of a route, it is often combined with adjectives like 'gut' (good/considerable), 'ganz' (whole/quite), or 'weit' (far). It expresses that the distance is considerable.
Von hier ist es noch ein gutes Stück bis zum Bahnhof.
From here, it is still quite a stretch to the train station.
The expression 'am Stück' (in one stretch) means 'without a break' or 'uninterruptedly'. It is often used to describe the duration of an activity.
Er kann einen ganzen Film am Stück ansehen, ohne auf sein Handy zu schauen.
He can watch an entire film in one stretch without looking at his phone.
The idiom 'Stück für Stück' (piece by piece) means 'gradually' or 'step by step'. It describes a process that takes place slowly and in stages.
Er lernt die neue Software Stück für Stück.
He is learning the new software piece by piece.
part
Both words can refer to a separated component of a whole. „Teil“ describes it neutrally as a related section or component, while „Stück“ places more emphasis on the individual, concrete piece or portion. Use „Teil“ for its relationship to the whole and „Stück“ for the concrete unit.

Ich nehme ein Stück von der großen Torte.
I’ll take a piece of the large cake.
Dieser Teil des Kuchens gehört noch zur großen Torte.
This part of the cake is still part of the large cake.