Short Answer: Both relative dating and absolute dating are tools used to give temporal characteristics to a sequence of events.
Both are attempting to get information on the history of events.
It is possible to tell the number of years ago a particular rock or archeological site had been formed.
Two broad categories of classification methods are relative dating and absolute dating.
Before radiometric dating it was difficult to determine the actual age of an object.
This is due to the fact that one or both of the objects may have been moved or redeposited into a different location.
Techniques include tree rings in timbers, radiocarbon dating of wood or bones, and trapped charge dating methods such as thermoluminescence dating of glazed ceramics.
Coins found in excavations may have their production date written on them, or there may be written records describing the coin and when it was used, allowing the site to be associated with a particular calendar year.
Absolute dating, on the other hand is capable of telling the exact age of an item using carbon dating and many other techniques that were not there in earlier times.
Relative dating makes use of the common sense principle that in a deposition of layers.
Tools like radiometric dating allow some samples to be assigned a certain age to within some accuracy.