appeal / call
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appeal
A public request or appeal to a group of people to do something specific, for example to donate or take part in a demonstration.
Die Organisation startete einen Aufruf für Blutspenden.
The organization launched an appeal for blood donations.
'Der Aufruf' (appeal/call) is the noun form of the separable verb 'aufrufen' (to call on/call up). The meaning is closely connected: when you call on someone to do something, you start an appeal.
Die Regierung ruft die Bürger zum Energiesparen auf.
The government is calling on citizens to save energy.
When an Aufruf names a specific goal or action, this is almost always expressed with the preposition 'zu' followed by the dative.
Die Organisation veröffentlichte einen Aufruf zur Solidarität.
The organization published an appeal for solidarity.
In the context of a public request, 'Aufruf' (appeal) is often combined with certain verbs: you can start, publish, or follow an appeal.
Viele Menschen folgten dem Aufruf zur Demonstration.
Many people followed the appeal to demonstrate.
In computer science, you can recognize this meaning from words like 'Webseite' (website), 'Funktion' (function), 'Programm' (program), or 'Link' (link). Here, 'Aufruf' (call) means starting or loading a digital resource.
Der wiederholte Aufruf der Funktion führte zu einem Systemabsturz.
The repeated call of the function led to a system crash.
This meaning is typically found in situations where you have to wait until it is your turn. Contexts are often a waiting room, a government office, or a court.
Nach langem Warten erfolgte endlich der Aufruf meiner Nummer.
After a long wait, my number was finally called.
start
'der Start' and 'der Aufruf' can both have to do with beginning a technical process. 'der Start' generally means the beginning of an activity, a project, or a process. 'der Aufruf' is more specific in computer science: a program, function, or website is loaded or started through an instruction. In everyday life, people are more likely to say 'Start' when something begins. 'Aufruf' fits better in technology or programming when talking about the command or the loading process.
Beim Aufruf der Webseite erscheint zuerst ein kleines Fenster mit Informationen.
When the website is called up, a small window with information appears first.
Der Start des neuen Projekts ist für Montag geplant.
The start of the new project is planned for Monday.