
The word idiot comes from the Greek ἰδιώτης, idiōtēs 'a private person, individual', 'a private citizen' (as opposed to an official), 'a common man', 'a person lacking professional skill, layman', later 'unskilled', 'ignorant' from ἴδιος, idios 'private', 'one's own'...[3]
An ideogram or ideograph (from Greek ἰδέα idéa idea and γράφω gráphō to write) is a graphic symbol that represents an idea or concept, independent of any particular language, and specific words or phrases.
The word idea comes from Greek ἰδέα idea "form, pattern," from the root of ἰδεῖν idein, to see.[3]