Definitions for "Lens Mount"
See C-Mount and CS-Mount.
Camera lenses generally come with either a C-mount or CS-mount and must be matched appropriately to the camera's mounting requirements. A C-mount is the simplest type of mount on the market and just screws into the camera. Modern cameras and lenses are generally CS mount rather than C mount. A CS-mount lens cannot be used on a C-mount camera.
See CMount or CS Mount