Hey Wójcik :D So, I'll try to explain to you what some of those expressions mean, but actually I never heard about the first one. 2. fazer falta - that expression can has more than one meaning. If you're talking about some sport, It means fault, but it can be used when you're missing someone. Ex: "Ele está fazendo falta" (I'm missing him). 3. correr o risco - It can has more than one meaning too. If you put it on the sentence "Vou correr o risco", It means you'll take your chances, even if something can go wrong. Else, if you say that someone or something is "Correndo o risco", It means that something can go wrong, so there are risks. 4. comer as horas - I think this can be used when the time is running to fast. Sorry for my bad English, and I hope I've helped you! If you have any questions, hit me up and I'll try to help. XD