I kind o understand, but I will have to re watch this video again.

In the Cypriot dialect, the word for horse is άππαρος which comes from ἱππάριον which is derived from the Ancient Greek ἵππος. Here's an old Greek song about two horses, one white and one black Γρηγόρης Μπιθικώτσης - Ένα όμορφο αμάξι με δυο άλογα, kzfaq.info/get/bejne/pbCeiJpq2ZqwomQ.html

Πολύ ενδιαφέρον. Δεν ήξερα η αιτία επειδή άλλαξε από τον "ίππος" στον "άλογο".

small correction, ἄλογος - adjective meaning reason, irrational; unspeaking, speechless, has the derived neuter substantive ἄλογον - noun meaning animal, beast, brute (in the plural), later this use extended to horses in the army from the koine period/byzantine period. ἄλογο(ν) does not mean without logic or reason (unless you are referring to the accusative singular of ἄλογος), rather it simply means beast or brute. The ἄλογον was used in the military to differentiate between soldiers -ie humans who possess reason and speech - and animals which do not, "ἄλογον ζῷον. As soldiers mostly used horses, the meaning became associated with horses in particular, as these animals predominated on the battlefield, but again only from the koine period onwards. Prior to this, as I have said the term mostly referred to animals/beasts generically. horses were considered a working animal, and wealthy Greeks would replace them as a novelty. while some philosophers thought that animals possessed reason, most did not. The great Aristotle explains that animals are IRrational, and they are exactly ἄλογα without a logos. see Aristotle and animal mind by Claudiu Mesaroș