The coupling between different modules of a software is categorized as follows
$${\rm I}.\,\,\,\,\,\,\,\,\,\,\,$$ Content coupling
$${\rm II}.\,\,\,\,\,\,\,\,\,$$ Common coupling
$${\rm III}.\,\,\,\,\,\,\,$$ Control coupling
$${\rm IV}.\,\,\,\,\,\,\,$$ Stamp coupling
$${\rm V}.\,\,\,\,\,\,\,\,\,$$ Data coupling
Coupling between modules can be ranked in the order of strongest (least desirable) to weakest (most desirable) as follows.