Below you can see the front-view size comparison of the Samsung NX2000 and Fujifilm GFX 50R. The Samsung NX2000 is clearly the smaller of the two cameras. Its body is 42mm narrower, 32 mm shorter and 30 mm thinner than the Fujifilm GFX 50R.
The chart below depicts how two cameras compare with average dimensions of the cameras in their class.