operation / effort / use
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operation
A planned action or mission, especially by organizations such as the police, fire department, or military.
Nach dem Unfall war die Feuerwehr schnell im Einsatz.
After the accident, the fire department was quickly in operation.
effort
Personal commitment, effort, or energy spent in order to achieve a goal.
Ihr unermüdlicher Einsatz für das Projekt wurde von allen bewundert.
Her tireless effort for the project was admired by everyone.
use
The use or application of something, for example materials, tools, or methods.
Der Einsatz von künstlicher Intelligenz verändert viele Arbeitsbereiche.
The use of artificial intelligence is changing many areas of work.
stake
The amount of money or value that is risked in a game, bet, or investment.
Der Einsatz bei dieser Pokerrunde war 10 Euro.
The stake in this poker round was 10 euros.
insert
A part that is placed or inserted into another object, for example a strainer in a cooking pot or a lining in a bag.
Für das Dämpfen von Gemüse lege ich immer den speziellen Einsatz in den Topf.
For steaming vegetables, I always put the special insert into the pot.
'Der Einsatz' is the noun related to the separable verb 'einsetzen' (to insert / to deploy / to use). The basic idea of the verb—putting something in, calling someone into service, or using something—appears again in the different meanings of the noun.
Der Trainer entschied sich, einen neuen Spieler einzusetzen.
The coach decided to put in a new player.
A very common fixed expression is 'im Einsatz sein' (to be in operation / to be on duty). It means that someone or an organization is currently actively working on a mission or task.
Die Rettungskräfte waren die ganze Nacht im Einsatz.
The rescue workers were on duty all night.
To describe personal commitment, 'Einsatz' (effort/commitment) is often combined with the verb 'zeigen' (to show). Typical adjectives are 'groß' (great), 'voll' (full), 'enorm' (enormous), or 'persönlich' (personal).
Die Mitarbeiter zeigten bei dem Projekt großen Einsatz.
The employees showed great effort on the project.
To describe the application of something, the structure 'der Einsatz von + [noun]' (the use of + [noun]) is often used. Another common expression is 'zum Einsatz kommen', which means 'to be used'.
Der Einsatz moderner Technik ist in dieser Firma Standard.
The use of modern technology is standard in this company.
The meaning of 'Einsatz' becomes clear from context. Words like 'Polizei' (police) or 'Feuerwehr' (fire department) point to a mission. 'Arbeit' (work) or 'Projekt' (project) point to commitment, while 'Technik' (technology) or 'Material' (material) point to the use of something.
Der Einsatz der neuen Software hat die Prozesse verbessert.
The use of the new software improved the processes.
In contexts involving games, betting, or finance, 'Einsatz' (stake) refers to the amount of money one risks. Typical verbs are 'erhöhen' (to raise), 'verdoppeln' (to double), or 'verlieren' (to lose).
Er hat seinen ganzen Einsatz bei der letzten Runde verloren.
He lost his entire stake in the last round.
business / operation
Einsatz and Betrieb can both be associated with a machine that is functioning. Einsatz emphasizes using the machine for a specific task, while Betrieb refers to its ongoing state of operation. If you are asking about using it for a task, Einsatz is appropriate; if you mean that it is functioning, use Betrieb.
Für die Reparatur kam der Akkuschrauber zum Einsatz.
The cordless screwdriver was used for the repair.
Nach dem Laden war der Akkuschrauber wieder in Betrieb.
After charging, the cordless screwdriver was back in operation.
