Is there a list of words that when spelled backwards form completely different words and are not palindromes?

Answer 1

A word which spells a different word when reversed is called an "anadrome", a reversible palindrome, or a "semordnilap." (note that semordnilap is palindrome backwards)

e.g. tap/pat, dog/god, drawer/reward

A list can be found about 3/4 down the page at the wikipedia 'related link' below.

A word which is the same backward and forward is called a "palindrome."

e.g. mom, dad, rotor, pup, deified, racecar

A list of palindromes can be found at the 'related link' below.