[vishkk]

Not entirely related to the article, George Lakoff's Metaphors We Live By is quite interesting. How, over the years, the words we use have become associated with the context in the past, or borrowed from other contexts, literally or figuratively. For example, IIRC, the book mentioned that all, or most of the words we use with time are related to money -- we spend, waste, lose, invest. Words related to arguments come from war/battle language -- defend, attack, counterattack.

I wonder if euphemisms have some metaphorical overloading that changes over the time, or so.