update
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update
The process by which something (e.g., data, software, information) is brought up to date, or the result of this process.
Bitte führen Sie die empfohlene Aktualisierung Ihres Betriebssystems durch, um Sicherheitslücken zu schließen.
Please carry out the recommended update of your operating system to close security vulnerabilities.
'Aktualisierung' (update) belongs to a word family: the adjective 'aktuell' (up to date/current) becomes the verb 'aktualisieren' (to update), from which the noun 'die Aktualisierung' (the update) is formed.
Ich muss dringend meine Kontaktdaten aktualisieren.
I urgently need to update my contact details.
This word is very often used in digital contexts. Typical combinations are 'eine Aktualisierung durchführen' (to carry out an update), 'installieren' (to install), or 'herunterladen' (to download). It is often about updating software, data, or a status.
Die Aktualisierung der App bringt neue Funktionen mit sich.
The update to the app brings new features with it.
To say what is being updated, you usually use a genitive or the preposition 'von' (of/from). The genitive is more common in written language.
Die Aktualisierung der Kundendatenbank dauert mehrere Stunden.
The update of the customer database takes several hours.
change
'Änderung' and 'Aktualisierung' can both mean that something is edited and becomes different as a result. 'Änderung' is more general: something is adjusted, corrected, or changed. 'Aktualisierung' is more specific and means that something is brought up to date, for example data, software, or information. Learners may confuse the words because an update often also includes a change. But with 'Aktualisierung', the important point is that the new version is more current. With 'Änderung', the reason can also be an error, a new request, or a different plan.
Nora hat zu Hause die Aktualisierung der Software installiert.
Nora installed the software update at home.
Morgen gibt es eine Änderung im Programm, weil der Kurs später beginnt.
Tomorrow there will be a change to the program because the course starts later.