Below you can see the front-view size comparison of the Fujifilm X-E3 and Fujifilm JV150. The Fujifilm JV150 is clearly the smaller of the two cameras. Its body is 28 mm narrower, 19 mm shorter and 22 mm thinner than the Fujifilm X-E3.
The chart below depicts how two cameras compare with average dimensions of the cameras in their class.