lack / defect
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lack
The absence of something that is necessary or desired; a situation in which there is not enough of something.
In vielen Regionen herrscht ein großer Mangel an sauberem Trinkwasser.
In many regions, there is a great lack of clean drinking water.
defect
A flaw, imperfection, or defect in an object that reduces its value or impairs its function.
Das gekaufte Gerät hatte einen Mangel und musste umgetauscht werden.
The device I bought had a defect and had to be exchanged.
in the absence of
A formal expression that means 'because something is missing' or 'since something does not exist'.
In Ermangelung von Beweisen wurde der Angeklagte freigesprochen.
In the absence of evidence, the defendant was acquitted.
The two main meanings can be distinguished well: 'Mangel an etwas' (lack of something), with the preposition 'an', describes that something is missing. 'Ein Mangel an einer Sache' (a defect in something), often with the genitive or 'an', describes a defect.
Wegen des Mangels an Personal mussten wir länger warten.
Because of the lack of staff, we had to wait longer.
The noun 'der Mangel' (lack/defect) is closely related to the verb 'mangeln' (to be lacking). Both are used with the preposition 'an' and the dative to express that something is missing.
Es mangelt uns an Zeit, um das Projekt fertigzustellen.
We lack the time to finish the project.
When 'Mangel' means that something is missing, it almost always appears with the preposition 'an', followed by the dative. A typical formulation is 'es herrscht ein Mangel an ...' (there is a lack of ...).
Auf der Konferenz herrschte kein Mangel an interessanten Ideen.
At the conference, there was no lack of interesting ideas.
In the context of flaws or defects, 'Mangel' (defect) is often used with verbs such as 'aufweisen' (to exhibit), 'haben' (to have), 'beseitigen' (to remove), or 'beheben' (to fix). A 'versteckter Mangel' is a hidden defect that you do not see immediately.
Das Produkt wies bei der Lieferung mehrere Mängel auf.
The product exhibited several defects upon delivery.
The expression 'in Ermangelung' (in the absence of) is a formal preposition, often used in administrative or legal language, that requires the genitive. It means 'because there is no ...'.
In Ermangelung eines besseren Plans folgten wir seinem Vorschlag.
In the absence of a better plan, we followed his suggestion.
mistake / error
Fehler and Mangel can both refer to an imperfection in a product. A Fehler is more likely to be a specific deviation from the correct condition, such as an incorrect output. A Mangel is a characteristic or defect that impairs the item's value or function.
Der lockere Papierhalter ist ein Mangel, der die Nutzung des Druckers beeinträchtigt.
The loose paper holder is a defect that impairs the use of the printer.
Der Drucker hat einen Fehler und setzt auf jeder Seite die Seitenzahl falsch.
The printer has an error and prints the page number incorrectly on every page.
