der Boxer
boxer
A person who practices the combat sport of boxing, whether as an amateur or as a professional.
Der junge Boxer trainiert hart für seinen nächsten Kampf.
The young boxer is training hard for his next fight.

boxer
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boxer
A person who practices the combat sport of boxing, whether as an amateur or as a professional.
Der junge Boxer trainiert hart für seinen nächsten Kampf.
The young boxer is training hard for his next fight.

When 'Boxer' (boxer) refers to the athlete, the context often contains words from the world of sports such as 'Ring' (ring), 'Kampf' (fight), 'trainieren' (to train), 'Handschuhe' (gloves), or 'Gewichtsklasse' (weight class).
Der Boxer bereitete sich monatelang auf den Weltmeisterschaftskampf vor.
The boxer prepared for the world championship fight for months.
When the dog breed is meant, the sentence often contains words like 'Hund' (dog), 'bellen' (to bark), 'Leine' (leash), 'Gassi gehen' (to go for a walk), or other terms related to pets.
Unser Boxer ist ein sehr lieber Familienhund, der gerne mit Kindern spielt.
Our boxer is a very sweet family dog who likes playing with children.
The meaning 'Boxermotor' (boxer engine) belongs to the technical language of engineering, especially in the field of cars and motorcycles. You often hear it in connection with brands like Porsche, Subaru, or BMW.
Der charakteristische Klang des Autos kommt vom Boxermotor.
The car's characteristic sound comes from the boxer engine.
As a term for underwear, 'Boxer' (boxers) is colloquial and a short form of 'Boxershorts' (boxer shorts). In this meaning, the word is more often used in the plural ('Boxer').
Er trägt am liebsten weite Boxer aus Baumwolle.
He prefers wearing loose cotton boxers.
fighter
'der Kämpfer' and 'der Boxer' can both refer to people who fight. However, 'Kämpfer' is much more general. It can be a soldier, a combat athlete, or someone in a physical fight. 'Boxer' is more specific: this person does the sport of boxing. Learners may confuse the words because a boxer is of course also a fighter. But not every fighter is a boxer. When it is specifically about boxing in the ring, 'Boxer' is correct. For other fighting situations, 'Kämpfer' fits better.

Im Park trainiert der Boxer morgen mit seinem Trainer für den nächsten Wettkampf.
Tomorrow in the park, the boxer will train with his coach for the next competition.
Der Kämpfer betritt die Matte ruhig und konzentriert.
The fighter steps onto the mat calmly and with focus.