There are quite a few.
(see the related link for lists)
Words that when spelled backward form another word are anadromes, also known as semodnilaps (palindrome backward).
Some common anadrome pairs, or heteropalindromes:
List of 4 letter words that start with the letter "K"KneeKnowKeenKilnKeepKingKnitKiteKeel
The purpose of keeping a running list of new vocabulary words is to make it easier to remember and use new words.
words with 10 letters:ambassadorassortmentassumptionassistancebarefootedbartendersbasketballbeforehandbelievablebenefactorbeneficialcircumventcollectionconnectiondecorationdepositiondistractedendangeredeverythingfatherhoodglossariesgraduationhopelesslyinaugurateirrelevantjournalismkingfisherleadershipmarsupialsmelancholymicroscopenutritiousostensiblepopulationquadranglerandomnessreasonablereclaimingregenerateregrettingrepublicansettlementsuccessfultechniquestouchdownsuniversityvoluminouswatermelon
List of 9 letter words that start with the letter "K"KnowledgeKnighting
Cunning, stealth
An anadrome.
Words that change when spelled backwards are called anagrams.
Anadrome
Anadrome
Anadrome
anadrome
Anadrome
Anadrome
Anadrome
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/rewardA 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, racecarA list of palindromes can be found at the 'related link' below.
A list of words that end with ES:admiresbootiesclothesduesglasseshadesseriesyes
A list of kind words