Whether "person" is the same as hypostasis, subsistence, and essence?

❌ Objection 1 : It would seem that "person" is the same as "hypostasis," "subsistence," and "essence." For Boethius says (De Duab. Nat.) that "the Greeks called the individual substance of the rational nature by the name hypostasis." But this with us signifies "person." Therefore "person" is altogether the same as "hypostasis."

❌ Objection 2 : Further, as we say there are three persons in God, so we say there are three subsistences in God; which implies that "person" and "subsistence" have the same meaning. Therefore "person" and "subsistence" mean the same.

❌ Objection 3 : Further, Boethius says (Com. Praed.) that the Greek {ousia}, which means essence, signifies a being composed of matter and form. Now that which is composed of matter and form is the individual substance called "hypostasis" and "person." Therefore all the aforesaid names seem to have the same meaning.

❌ Objection 4 : On the contrary, Boethius says (De Duab. Nat.) that genera and species only subsist; whereas individuals are not only subsistent, but also substand. But subsistences are so called from subsisting, as substance or hypostasis is so called from substanding. Therefore, since genera and species are not hypostases or persons, these are not the same as subsistences.

❌ Objection 5 : Further, Boethius says (Com. Praed.) that matter is called hypostasis, and form is called {ousiosis}---that is, subsistence. But neither form nor matter can be called person. Therefore person differs from the others.