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.
'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
'die Einführung' and 'die Einweisung' can both mean an explanation at the beginning. 'die Einführung' is more suitable when you are learning the basics of a topic, for example in a course or a book. 'die Einweisung' is usually more practical: someone shows how to use a device, do a task, or behave correctly in a new place. Learners may confuse the words because both come at the beginning of something new. Remember: 'Einführung' explains a topic in general, while 'Einweisung' shows more specifically how to do something in practice.
Vor der Arbeit an der Maschine bekam Mehmet eine genaue Einweisung.
Before working on the machine, Mehmet received detailed instruction.
In der ersten Stunde gab der Lehrer eine kurze Einführung in das Thema Politik.
In the first lesson, the teacher gave a brief introduction to the topic of politics.