Tu quoque

(There seems to be a promo by Amazon of my book "A Dog eat Dog-food World" which has been made available at about 30% of the list price. So, for a princely sum of Rs. 29/= you can possess and read the ebook. Click on the yellow book-cover to the right) Have you wondered why common things tend to have uncommon names? Or get referred to by uncommon, rather hifalutin terms? Must be because