A palyndrome is a word, phrase or number which doesn't change if you spell it backwards.
The current year number (in the Gregorian Calendar), 2002, is one of those. The next palyndrome occurs only in 110 years (2112).
Some examples of words: noon; level
And a sentence: Able was I, ere I saw Elba.
Hilmar.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)