Full Idea
An object must have some of its natural properties in this world. Some of those it has in common with objects of some proximate kind (Aristotelian essentialism), and others individuate it from objects of the same kind (individuating essentialism).
Gist of Idea
Aristotelian essentialism is about shared properties, individuating essentialism about distinctive properties
Source
Ruth Barcan Marcus (Essential Attribution [1971], p.193)
Book Reference
-: 'Nous' [-], p.193