semantic- meaning of a word, phrase, sentence, or text; "a petty argument about semantics"
It means to speak or reply in response to an answer to a question or a person
Lucas means "Light" The origin is Latin.
If it is a girl's it means lucky or fortunateandIf it's a boy's name it means as courageous as a mountain lion
'MEANING' in other words can be the 'vocabulary' of a word or the 'essence' of the word as to what the word precisely means. OR meaning is the meaning of meaning what you just said meaning