die Windel
diaper
An absorbent hygiene product worn mainly by babies and toddlers to catch urine and stool.
Das Baby braucht eine frische Windel.
The baby needs a fresh diaper.

diaper
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diaper
An absorbent hygiene product worn mainly by babies and toddlers to catch urine and stool.
Das Baby braucht eine frische Windel.
The baby needs a fresh diaper.

The most common action connected with diapers is changing them. Typical expressions are 'die Windel wechseln' (to change the diaper), 'eine frische Windel anziehen' (to put on a fresh diaper), or 'eine volle Windel haben' (to have a full diaper).
Ich muss schnell die Windel von meinem Sohn wechseln.
I need to quickly change my son's diaper.
When you change someone's diaper, the person is in the dative. The diaper itself is the accusative object.
Kannst du bitte dem Baby die Windel wechseln?
Could you please change the baby's diaper?
The verb 'wickeln' is often used as a synonym for 'die Windeln wechseln' (to change diapers). The expression 'das Baby wickeln' means to put a fresh diaper on the baby.
Ich habe das Baby gerade frisch gewickelt.
I just changed the baby's diaper.
insert / deposit / performance
'die Einlage' and 'die Windel' can both have to do with hygiene and absorbing liquid. A 'Windel' is a complete hygiene product worn mainly by babies. An 'Einlage', on the other hand, is something placed inside something else, for example in underwear or in a shoe. Learners may confuse the words because both can occur in everyday care or hygiene contexts. If it is about a baby, 'Windel' is usually correct. If only a part is inserted, 'Einlage' is more likely to fit.

Vor dem Spaziergang wechselt Anna dem Baby noch schnell die Windel.
Before the walk, Anna quickly changes the baby's diaper.
Nach der Operation trägt Herr Kaya eine weiche Einlage im Schuh.
After the operation, Mr. Kaya wears a soft insert in his shoe.