How about adding αβγδ or ℵ (aleph) to that list? Or шћдж? Or add Chinese or Arabic letters to the list. Letters are symbols used to write down words of a natur

How about adding αβγδ or ℵ (aleph) to that list? Or шћдж? Or add Chinese or Arabic letters to the list. Letters are symbols used to write down words of a natural language. If you are unfamiliar with a language, you are more likely to call them "symbols" instead of "letters".