Category error?

Greek Learning Greek
1

I don’t understand why εμός etc. are conventionally taken to be possessive pronouns. Isn’t this a category error? For me, there are possessive adjectives, εμός etc., and there are personal pronouns, εγώ etc.—two distinct categories.

Can anyone resolve this for me?

2

in russian they are also categorized as possessive pr whereas in french as possessive adjective so i think it depends on the intellectual maturity of the nation who uses the language