a purta - refers to objects that you wear - clothes, a necklace, earrings etc a căra - refers to carrying something (usually heavy ; that doesn't go on your body like in 'a purta's case) - luggage, a new TV a duce - usually indicates transportation to a point or between 2 points. => the points can also be of time, not only space. (Ex : The 'transport' of an idea or program from now to a point in the future)