Nachfahre vs. Nachkomme vs. Abkömmling
The German words Nachfahre, Nachkomme, and Abkömmling all translate to descendant, but they differ in formality, context, and nuance. While often interchangeable in casual speech, their specific connotations are important in historical, legal, and biological contexts.
Nachfahre
B1Nachfahre is the most common and neutral term for a descendant. It is frequently used in historical and genealogical contexts, often referring to people who are many generations removed from their ancestor. It literally means one who travels after.
Er soll ein direkter Nachfahre eines berühmten Entdeckers sein.
(He is said to be a direct descendant of a famous explorer.)
Die Familie sucht nach den letzten lebenden Nachfahren in Europa.
(The family is searching for the last living descendants in Europe.)
Man kann sie als geistige Nachfahren der Romantik bezeichnen.
(You could call them the intellectual descendants of the Romantic movement.)
Nachkomme
B1Nachkomme is very similar to Nachfahre and is also very common. It tends to be slightly more formal and places a stronger emphasis on the direct biological bloodline (one who comes after). It is often used in official contexts, biology, and for immediate offspring (children, grandchildren). In plural form, Nachkommen is a standard term for progeny or offspring.
Alle direkten Nachkommen wurden im Testament namentlich erwähnt.
(All direct descendants were mentioned by name in the will.)
Der erfolgreiche Hengst hat über hundert Nachkommen gezeugt.
(The successful stallion has sired over a hundred offspring.)
Sie wünschte sich viele Nachkommen, um den Familiennamen weiterzugeben.
(She wished for many descendants to carry on the family name.)
Abkömmling
C1Abkömmling is the most formal and technical of the three. Its primary use is in legal (especially inheritance law) and scientific (biology, linguistics) contexts. It precisely defines a person in a direct line of descent from a progenitor (one who comes from/off of). Due to its clinical and legalistic tone, it can sound detached or even archaic in everyday conversation.
Laut Paragraph 1924 BGB ist ein Abkömmling ein Verwandter in gerader absteigender Linie.
(According to Paragraph 1924 of the German Civil Code, a descendant is a relative in the direct descending line.)
Nur ein leiblicher Abkömmling des Verstorbenen ist erbberechtigt.
(Only a biological descendant of the deceased is entitled to inherit.)
Diese Pflanzenart ist ein Abkömmling einer uralten Sorte aus den Anden.
(This plant species is a descendant of an ancient variety from the Andes.)
Summary
In essence, use Nachfahre for general and historical descendants. Use Nachkomme for direct descendants, offspring, or in slightly more formal family contexts. Reserve Abkömmling for precise legal and scientific terminology, where a direct, provable line of descent from a specific source is key.