 By contrast, the criterion of uniformity seems to be connected with the second conception of definition on which the purpose of a definition is to establish the use of the definiendum term. If the expression is applied to a number of distinct entities, we might expect that these entities share some unifying property in virtue of which the same expression is applied to them. A definition—insofar as it is intended to capture the application-conditions of the definiendum term—would be inadequate if it didn’t capture this unifying  property.[10]  But if the purpose of a definition is only to lay down a distinguishing property for the definiendum, then the criterion of uniformity doesn’t make much sense; for the only distinguishing property for the definiendum may well be a motley disjunction of different properties.