  Thus, for instance, since the accounts of ‘human’ in ‘Socrates is human’ and ‘Plato is human’ will be the same, ‘human’ is univocal or synonymous in these applications. (Note that Aristotle’s notion of the word ‘synonymy’ is not the same as the contemporary English usage where it applies to different words with the same meaning.)  In cases of univocity, we expect single, non-disjunctive definitions which capture and state the essence of the kinds in question. Let us allow once more for purposes of illustration that the essence-specifying definition of human is rational animal. Then, since human means rational animal across the range of its applications, there is some single essence to all members of the kind.