application / use
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application
The practical use or implementation of a method, knowledge, or rule in a concrete situation.
Die Theorie ist einfach, aber ihre Anwendung in der Praxis ist schwierig.
The theory is simple, but its application in practice is difficult.
application / app
A computer program or app developed for a specific function or task.
Ich habe mir eine neue Anwendung zur Organisation meiner Termine heruntergeladen.
I downloaded a new application for organizing my appointments.
use
The way in which a medical product (e.g., an ointment, a bandage) is used.
Bitte lesen Sie die Hinweise zur richtigen Anwendung der Augentropfen.
Please read the instructions for the correct use of the eye drops.
'Die Anwendung' (the application/use) is the noun form of the separable verb 'anwenden' (to apply/use). It describes the process or result when you use something (e.g., a rule, a method, or a product) in practice.
Man muss die neuen Regeln korrekt anwenden.
You have to apply the new rules correctly.
Although 'Anwendung' (application) is often used like the English 'application' (e.g., for software), it never means an application for a job. For that, German uses 'die Bewerbung' (job application).
Er hat seine Bewerbung für die Stelle gestern abgeschickt.
He sent off his application for the position yesterday.
In connection with computers and smartphones, 'Anwendung' (application/app) is often combined with verbs like 'herunterladen' (to download), 'installieren' (to install), or 'starten' (to start/launch). It is a common word for 'App' (app) or 'Programm' (program).
Diese Anwendung hilft dir beim Organisieren deiner Fotos.
This application helps you organize your photos.
In a medical or pharmaceutical context, you can recognize this meaning from words like 'Salbe' (ointment), 'Creme' (cream), or the instructions 'zur äußerlichen/innerlichen Anwendung' (for external/internal use).
Diese Salbe ist nur zur äußerlichen Anwendung bestimmt.
This ointment is intended for external use only.
operation / effort / use
Einsatz and Anwendung can both express using a method for a task. Einsatz places greater emphasis on using the method as a means, while Anwendung emphasizes the act of applying or implementing it. The choice therefore depends on whether the focus is on the means used or on its practical implementation.
Die Anwendung der neuen Methode erleichtert die schnelle Berechnung.
Applying the new method makes the calculation quicker.
Zur schnellen Berechnung kam die neue Methode zum Einsatz.
The new method was used for the quick calculation.
