Hey they are basically the same but mp4 is more widely adopted.
1.Both MOV and MP4 are lossy formats which sacrifices quality for file size
2.MOV was initially developed by Apple as a file format for QuickTime
3.MOV is the basis for the development of MP4
4.MP4 is the industry standard and has more widespread support than MOV
5.Saving your file to either MOV or MP4 would result in the same video if you use the same codec