Where does “παραίνεσις” come from?

παραίνεσις (Ancient Greek) comes from Ancient Greek παραινέω, from Ancient Greek πᾰρᾰ-, from Ancient Greek παρά, from Latin verēdus, from Gaulish werēdos, from Proto-Celtic *uɸoreidos — horse.

παραίνεσις (Ancient Greek): exhortation, address; exhortation, advice