Here we should distinguish between signs and symbols.

Semantic (study of relationships between signs and symbols and what they represent).

In other words, it is the difference between actual received symbols and ideal symbols.

The most basic understanding of language comes via semiotics - the association between words and symbols.

On the other hand, French and English have a strong difference between sounds and symbols.

It displays a one-to-one relationship between symbols and sounds, unlike traditional writing systems.

However, in the English language there is a very imprecise relationship between written symbols and sound symbols.

This makes it hard to distinguish between symbols when there are many of them at a single site.

Semantics is the relationship between symbols and the things they refer to.

I have to toggle between letters, numbers, and symbols; it's much less convenient.