der Ochse
ox
A castrated male bovine that was often used in the past as a draft and work animal in agriculture.
Früher zogen Ochsen den Pflug über das Feld.
In the past, oxen pulled the plow across the field.

ox
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ox
A castrated male bovine that was often used in the past as a draft and work animal in agriculture.
Früher zogen Ochsen den Pflug über das Feld.
In the past, oxen pulled the plow across the field.

'Der Ochse' (the ox) belongs to the N-declension. This means that the noun takes the ending '-n' or '-en' in all cases except the nominative singular. This is a common source of mistakes.
Der Bauer spannt den Ochsen vor den Wagen.
The farmer hitches the ox to the cart.
As an insult, 'Ochse' (idiot / oaf) is used to describe a person as stupid, slow, or clumsy. It is often used in direct address when you are annoyed with someone.
Sei nicht so ein Ochse und denk nach, bevor du handelst!
Don't be such an idiot, and think before you act!
The idiom 'wie der Ochse vorm Berg stehen' (to be completely stumped) is a fixed unit. It is almost always used with the verb 'stehen' (to stand) to express that someone is completely at a loss.
Bei dieser Matheaufgabe stehe ich wirklich wie der Ochse vorm Berg.
With this math problem, I'm really completely stumped.
idiot
'der Idiot' and 'der Ochse' can both be used as insults for a stupid or unreasonable person. 'Der Idiot' is very direct and strongly derogatory. 'Der Ochse' also sounds insulting, but often feels a bit more figurative and can also mean a clumsy or simple-minded person. 'Ochse' also has a normal animal meaning, which is not meant here. In conversations, you should be careful with both words because they are hurtful.

Ich habe den Termin vergessen und kam mir wie ein richtiger Ochse vor.
I forgot the appointment and felt like a real idiot.
Nach dem Streit nannte er den Fahrer einen Idioten.
After the argument, he called the driver an idiot.