This is the 3963rd most frequent German word.
unterschrift
Signature.
Here, 'Unterschrift' refers to the act of signing as a formal requirement.
Die Unterschrift des Vertrages ist verpflichtend.
The signature of the contract is mandatory.
In this sentence, 'Unterschrift' represents a literal mark or sign made by an individual to authenticate or confirm something.
Kannst du deine Unterschrift hier setzen?
Can you put your signature here?
Here, 'Unterschrift' refers to the specific scribble or specific identifying mark an individual places on a document.