
das Gedächtnis
memory
The mental ability to store information, impressions, and experiences and recall them later.
Im Alter lässt das Gedächtnis oft nach.
In old age, memory often declines.
memory
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memory
The mental ability to store information, impressions, and experiences and recall them later.
Im Alter lässt das Gedächtnis oft nach.
In old age, memory often declines.

memory
The totality of memories of a person, a time, or an event.
Das Gedächtnis an unsere gemeinsame Reise wird immer bleiben.
The memory of our trip together will always remain.

in memory of
An expression used to say that something is done or erected in honorable remembrance of a deceased person.
Diese Gedenktafel wurde zum Gedächtnis an die Opfer des Krieges aufgestellt.
This memorial plaque was put up in memory of the victims of the war.
The word 'Gedächtnis' (memory) is related to the verb 'denken' (to think). The prefix 'Ge-' and the ending '-nis' together form an abstract concept that describes the result or place of thinking: memory.
Er hat viele alte Geschichten in seinem Gedächtnis bewahrt.
He preserved many old stories in his memory.
To describe the ability to remember, 'Gedächtnis' (memory) is often combined with the verb 'haben' (to have) and an adjective. Very common phrases are 'ein gutes Gedächtnis haben' (to have a good memory) or 'ein schlechtes Gedächtnis haben' (to have a bad memory).
Meine Großmutter ist 90 Jahre alt, aber sie hat immer noch ein ausgezeichnetes Gedächtnis.
My grandmother is 90 years old, but she still has an excellent memory.
When 'Gedächtnis' (memory) means the memory of a specific thing or person, it is almost always used with the preposition 'an' and the accusative case.
Das Gedächtnis an seine Kindheit machte ihn glücklich.
The memory of his childhood made him happy.
The phrase 'zum Gedächtnis an' (in memory of) is a fixed expression. It is used almost exclusively in the context of commemorating deceased people or historical events, often on monuments or at memorial services.
Die Familie stiftete eine Bank zum Gedächtnis an ihre verstorbene Mutter.
The family donated a bench in memory of their deceased mother.
memory / reminder
Both words relate to things from the past that are preserved in the mind. An Erinnerung is usually a specific image, feeling, or experience, whereas Gedächtnis refers more to the ability to store and recall such content. Use „Erinnerung“ for the individual content and „Gedächtnis“ for the mental ability.

Sein Gedächtnis funktioniert auch im hohen Alter noch sehr gut.
His memory still works very well even in old age.
Die Erinnerung an den ersten Schultag ist ihr besonders wichtig.
The memory of her first day at school is especially important to her.