wu

wu

The word "wu" does not exist in standard German.

The word 'wo' is used as an interrogative pronoun indicating the place or location in the question.

Wo wohnst du?

Where do you live?

Here, 'wo' introduces a subordinate clause indicating a place or location related to the context.

Ich weiß nicht, wo er ist.

I don't know where he is.

In this case, 'wo' refers to a specific place in a temporal context, connecting two clauses and giving information about a subjective viewpoint of the location.

Wo wir damals waren, war es sehr schön.

Where we were back then, it was very beautiful.