instruction / admission
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instruction
An explanation or guidance on how to operate a device, complete a task, or find your way in a new situation.
Vor der ersten Benutzung der Maschine erhalten alle Mitarbeiter eine gründliche Einweisung.
Before using the machine for the first time, all employees receive thorough instruction.
hospital admission
The formal admission of a patient to a hospital, usually on a doctor's order.
Der Hausarzt hat ihm eine Einweisung für das Krankenhaus ausgestellt.
The family doctor issued him a referral for admission to the hospital.
'Die Einweisung' (instruction/admission) is the noun corresponding to the separable verb 'einweisen'. The verb means both 'to instruct someone' and 'to admit someone to a clinic', and the noun has both meanings.
Der Arzt wird Sie in die richtige Abteilung einweisen.
The doctor will refer you to the correct department.
The context makes the meaning clear. If it is about devices, software, or tasks, it means instruction or training. If it is about doctors, patients, or clinics, it means admission to a hospital.
Die Einweisung in das neue System dauert etwa eine Stunde.
The instruction on how to use the new system takes about an hour.
When 'Einweisung' means instruction, it is often followed by the preposition 'in' with the accusative to name the topic. Typical verbs are 'geben' (to give), 'bekommen' (to get), and 'erhalten' (to receive).
Ich habe vom Chef eine Einweisung in meine neuen Aufgaben bekommen.
I got instruction from the boss on my new tasks.
In a medical context, a doctor 'stellt' eine Einweisung 'aus' (issues a referral for admission). The patient 'bekommt' eine Einweisung 'für' ein Krankenhaus (gets a referral for a hospital).
Meine Ärztin hat mir eine Einweisung für einen Spezialisten ausgestellt.
My doctor issued me a referral to a specialist.
introduction / implementation / insertion
Both words can refer to initial help with a new task or situation. Einführung focuses more on teaching the basics and providing a general overview, while Einweisung provides concrete help with operating something or finding one's way around. Einführung is more appropriate for getting acquainted with something, while Einweisung is more appropriate for carrying out a task correctly.
Vor der ersten Fahrt erhielten wir eine Einweisung in die Bedienung des Geräts.
Before our first drive, we received instructions on how to operate the device.
Die Einführung in die neue Aufgabe gab uns einen allgemeinen Überblick.
The introduction to the new task gave us a general overview.
