Pretty self-explanatory from the title. What's the difference between теперь and сейчас? They apparently both mean now, but I'm guessing there's some difference in usage? Some English examples: "What are you doing now?" (at this moment) "I live in Canada now" (ie. I didn't live there before) "What do you want now?" (ie. expressing repetition/exasperation) Would the two words be interchangeable in these cases?