Child labour is also considered to be any work that endangers the physical, mental or moral well-being of the child, either by the nature of the work or as a result of the conditions under which it is carried out. It is referred to as dangerous work. Unquestionably, the worst forms of child labour are those defined internationally as slavery, human trafficking, debt bondage and other forms of forced labour, as well as the forced recruitment of children for use in armed conflicts, prostitution, pornography and other illegal activities.