die Reparatur
repair
The action or process of restoring something that is damaged or defective to a working condition.
Die Reparatur der Waschmaschine war teurer als erwartet.
The repair of the washing machine was more expensive than expected.

repair
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repair
The action or process of restoring something that is damaged or defective to a working condition.
Die Reparatur der Waschmaschine war teurer als erwartet.
The repair of the washing machine was more expensive than expected.

The noun 'die Reparatur' (repair) belongs to the same word family as the verb 'reparieren' (to repair). Both words share the same meaning and origin, which makes learning them easier.
Mein Fahrrad muss repariert werden.
My bicycle needs to be repaired.
A very common construction is to bring something 'zur Reparatur' (in for repair) or to give something 'in Reparatur' (in for repair). This describes the process of handing a defective item over to a specialist.
Ich muss mein Handy zur Reparatur bringen.
I need to bring my phone in for repair.
'Reparatur' (repair) is often combined with verbs such as 'durchführen' (to carry out), 'benötigen' (to need), or 'in Auftrag geben' (to commission). These describe the process of repair.
Ein Techniker führt die Reparatur durch.
A technician is carrying out the repair.
exchange
'der Austausch' and 'die Reparatur' can both occur when something is broken. The difference is important: with a 'Reparatur', the broken part or device is made functional again. With an 'Austausch', the old or defective part is removed and replaced with another one. Learners may confuse the words because both solve a problem. If the same part is restored, you say 'Reparatur'. If a new part is installed, you say 'Austausch'.

Die Reparatur meines Fahrrads ist am Montag fertig.
The repair of my bicycle will be finished on Monday.
Der Austausch des kaputten Displays war teurer als erwartet.
The replacement of the broken display was more expensive than expected.