What does the word semantics meaning?

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Examples of semantics

Advertisers use semantics to deliver messages about products. flashfilm/Lifesize/Getty...
Word semantics map

Teachers all over look to Gerald G. Duffy, EdD, for his expert advice on...
What is semantics in Linguistics?

Meaning seems at once the most obvious feature of language and the most...
General semantics and errors in Communications

As documented in several histories of the field, the intellectual origins...
Change NLS_LENGTH_SEMANTICS from BYTE to CHAR

You are right regarding why and as per Oracle recommendation. But as I...