I've always been greatly annoyed by the attempt to limit or twist the use of a common word by reference to its etymology. I've probably done it myself here and there, but that doesn't make it any less annoying. So here is xkcd doing his part to stamp out the practice.
Language changes, people; get over it. If you want meanings to stay put, do like Mother Church and use Latin.
(Thanks to my wife for sending me this. I can't believe she saw an xkcd before I did. I haven't been reading it as regularly as I used to.)