Convert mot to x

What is the difference between .mot and .x?

Description: LightWave Motion Data files, or MOT files, are used to store motion data as created by LightWave 3D, a 3D animation and rendering software. MOT files store information about a 3D object's position, rotation, scale, and deformation over a specific period of time.; X is a DirectX Model image file used by DirectX technology which is for 3D graphics rendering in games. The file format specifies 3D object structures for meshes, textures, animations, and objects.