They Don't bring with them the whole load of historical baggage accumulated over the years. In general they do not.
Some words acquire the status of technical terms, and so do carry more baggage than others.
For the most part, though, the precise meaning of a word is determined by the context. A word is not a proposition. Nor do words bring with them their family trees when they enter into linguistic relationship with other words to form a syntactic unit. A word is a linguistic token which can only have been used in a finite number of actual instances to help bear the semantic weight of meaning. The etymology of a word hardly seems relevant in determining the meaning of a sentence.