When is A Pig A Hog

In the bestselling tradition of Espy and Safire, this is the book that tells the difference between a couch and a divan, the Peter Principle and Murphy's Law, a second cousin and a first cousin, once removed. A pig, for example, is a hog when it weighs more than 120 pounds--but a salamander is never a lizard, and a polliwog is a tadpole from the moment it hatches. A fun reference for lexicographers and trivia buffs alike. Index.