Full Idea
The Real Essential distinction says if A and B are not of the same natural kind, then they are essentially distinct. This is the highest degree of distinction.
Gist of Idea
Real Essential distinction: A and B are of different natural kinds
Source
report of Francisco Suárez (Disputationes metaphysicae [1597], Bk VII) by Stephen Boulter - Why Medieval Philosophy Matters 4
Book Reference
Boulter,Stephen: 'Why Medieval Philosophy Matters' [Bloomsbury 2019], p.97
A Reaction
Boulter says Peter is essentially distinct from a cabbage, because neither has the nature of the other.