 Alienation is a concept especially, but not uniquely, associated with Marx’s work, and the intellectual tradition that he helped found. It identifies a distinct kind of social ill, involving a separation between a subject and an object that properly belong together. The subject here is typically an individual or a group, while the object is usually an “entity” which variously is not itself a subject, is another subject(s), or is the original subject (that is, the relation here can be reflexive). And the relation between the relevant subject and object is one of problematic separation. Both elements of that characterisation are important. Not all social ills, of course, involve separations; for instance, being overly integrated into some object might be dysfunctional, but it is not characteristic of alienation. Moreover, not all separations are problematic, and accounts of alienation typically appeal to some baseline unity or harmony that is frustrated or violated by the separation in question.