. Certain categories of words seem to have been especially vulnerable. Nearly all words relating to sexual intercourse and sexual organs were supplanted by words of Latin or Ancient Greek origin. Many, if not most, of the words in Modern English that are used in polite conversation to describe body parts and bodily functions are of Latin or Greek origin. The words which were used in Old English for these same purposes are now mostly either extinct or considered crude or vulgar, such as arse/ass.