Language
In the world in general, "language" might mean "Japanese," "English," etc.
In my case, I limit myself to "natural language" when referring to such things.
So if you simply go with "language," it's that higher level concept.
What is Language:.
$ L\subset \Sigma ^{*}=\{\langle \sigma _{1},\sigma _{2},...\rangle |\sigma _{i}\in \Sigma \}
It is a set of alphabetic columns
I wonder if this "alphabet" can be misunderstood like A-Z.
Whatever, I should be a little more careful with my language.
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