My question is whether 'category' and 'predicate' (and 'predicable') come from the same Greek word 'κατηγορία' in Aristotle. If so, predication is ontological by nature, in Aristotle, rather than linguistic or logical.
I will add here the most common usages of the term κατηγορώ.
An accuser in a court is a κατήγορος.
A sentence is in general a κατηγόρημα applied via the verb to the subject.
"Socrates is sleeping" Socrates the subject is called that he is sleeping, his being is categorized "accused- called" with the accidental of sleep.
"Socrates is beautiful" Beautiful is called in Greek grammar κατηγορούμενο. (an adjective called on the subject)
The "κατηγορίες", genres, species, αυτό το φυτό ανήκει στην κατηγορία των οπωροφόρων, this plant belongs to the taxonomy (category) of orchards.
Ταξινομία means to puts something in its τάξη, i.e. order. Category means to have called something as different and distinguishable from others. To be able to call something on its own, to accuse it, means to differentiate it.
κατά + αγορεύω = "for this" "I talk in public" , plead
a. η απόδοση μομφής σε κάποιον, καταγγελία = complaint, denunciation
b. η ομάδα στην οποία ανήκει ένα είδος, το σύνολο ομοίων πραγμάτων ή ιδεών
ομάδα, τάξη, σύνολο/ group, taxis- order, aggregation, summation