der Todesfall
death
The specific case of a person dying.
Wegen eines Todesfalls in der Familie bleibt das Geschäft heute geschlossen.
Due to a death in the family, the store will remain closed today.

death
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death
The specific case of a person dying.
Wegen eines Todesfalls in der Familie bleibt das Geschäft heute geschlossen.
Due to a death in the family, the store will remain closed today.

The word is made up of 'Todes-' (genitive of 'der Tod' (death)) and 'Fall' (case). So it literally describes a 'case of death'.
Die Polizei untersucht den Fall.
The police are investigating the case.
'Todesfall' (death) is a rather formal and impersonal term. It is often used in official announcements, news reports, or administrative contexts.
Die Zeitung berichtete über zwei Todesfälle bei dem Unfall.
The newspaper reported on two deaths in the accident.
Common phrases are 'ein Todesfall in der Familie' (a death in the family), 'wegen eines Todesfalls' (because of a death), or 'einen Todesfall melden/beklagen' (to report/mourn a death).
Er konnte nicht zur Arbeit kommen, da es einen Todesfall in seiner Familie gab.
He couldn't come to work because there had been a death in his family.
death
'der Tod' and 'der Todesfall' are closely connected, but they emphasize different things. 'der Tod' generally means the end of life. The word can be meant in a very personal, philosophical, or general way. 'der Todesfall' means a specific case in which a person has died. This word often sounds more factual and fits well with authorities, work, insurance, or official notices. The words can be confused because both touch on the same event. When it is about the topic or state, 'Tod' fits better; when a specific case is being reported or handled, 'Todesfall' fits better.

Wegen eines Todesfalls in der Familie kommt Frau Becker heute nicht zur Arbeit.
Because of a death in the family, Ms. Becker is not coming to work today.
Viele Menschen sprechen nicht gern über den Tod.
Many people do not like talking about death.