Kornblith is a realist who says that there are natural kinds in the world. These natural kinds are homeostatic property clusters in nature. People perceive the natural kinds in nature from the frequent association of specific qualities in several substances. These observations are taken by the mind to make our nominal essences correspond to the world around us. I agree with the conventionalist position of Locke.
People come to organize the world by observing the qualities in each object.
These qualities are then organized as simple ideas in the mind to form the nominal essences people use to recognize like objects in nature. The qualities in nature are rooted in the underlying constitution in each object. As technology has advanced, people have been able to make observations of underlying constitutions of the naked eye external properties. This new information has caused people to redefine the terms they use because they are using more simple ideas to make up the nominal essences held in the mind. Through this analysis, I show that the conventionalist theory of Locke accurately explains how people come to understand kinds.