This is the 29th most frequent Romanian word.
când
The Romanian word "când" means "when" in English.
Here, 'când' introduces a time-dependent clause describing 'when' the main action takes place.
Când mergi la piață, te rog să cumperi mere.
When you go to the market, please buy apples.
In this sentence, 'când' is used to form an indirect question asking 'when' an action should be done.
Nu știu când să încep proiectul.
I don't know when to start the project.
Here, 'când' expresses curiosity about the specific time an event will occur.