@mahtan Taco is a word that exists in many languages, and yet the meaning of the word might differ from country to country (or even have several meanings in the same country).
Similarly many words are losing their old meanings, or gaining new ones (like your example of sociopath/psychopath, or for an older one schizophrenic/split personality one), or how "latte" ("milk") now usually means "coffee with milk in". Or to stick to Japan since we're in a manga site, "Curry" is either a Japanese sweet stew which even when "hot" is pretty mild, or an Indian hot and spicy stew (that can be really hot).
I'll agree with (what I think is) your implied meaning, that when words change their value or meaning it risks leading to misunderstandings that might sometimes be humorous but might sometimes be outright dangerous.
Of course, usually people can catch it by context, if communication is actually going on. Few people will hear "Gimme some sugar, baby" and believe it's about asking an infant for a lump of sugar.
(Btw, my main reason for dragging you in was to get a reason to post the related existential comics link and your phrasing seemed to be the one most suited to my purpose
(And I'm brought up to ping people I quote.)