completion
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completion
The process or result of finishing, adding to, or making complete something that was previously incomplete.
Für die Vervollständigung des Antrags fehlt nur noch Ihre Unterschrift.
Only your signature is still missing for the completion of the application.
'Vervollständigung' (completion) is the noun form of the verb 'vervollständigen' (to complete). The ending '-ung' turns the action of the verb into a noun that describes the process or the result.
Bitte vervollständigen Sie den Satz.
Please complete the sentence.
To express what is being completed, a noun in the genitive usually follows. This structure is typical of formal administrative and written language.
Die Vervollständigung der Unterlagen hat mehrere Stunden gedauert.
The completion of the documents took several hours.
This noun is often used in connection with administrative tasks or collections. Typical phrases are 'die Vervollständigung eines Antrags' (the completion of an application), 'eines Formulars' (of a form), or 'einer Datensammlung' (of a data collection).
Nach der Vervollständigung seiner Briefmarkensammlung verkaufte er sie.
After completing his stamp collection, he sold it.
completion / degree
'der Abschluss' and 'die Vervollständigung' both have to do with the end of something. 'der Abschluss' tends to emphasize the final part or official end of a process, event, or period of time. 'die Vervollständigung' emphasizes that something was not complete before and is now being added to. They can be confused because both sound like 'getting finished'. In practical terms: 'Abschluss' fits when something is being ended; 'Vervollständigung' fits when missing parts are being added.
Für die Vervollständigung des Formulars fehlen noch zwei Unterschriften.
Two signatures are still missing to complete the form.
Zum Abschluss der Feier sang die Klasse noch ein Lied.
At the end of the celebration, the class sang one more song.