what is synchronization, why we need it in selenium

can any one explain me about synchronization concept clearly with an example

hey buddy,
synchronization means that you need to be able to make sure that your script commands enable the application to navigate to the correct web page and for that you need to use wait for* commands(if you are using selenium1)......................like in ajax elements it takes time for image to load

thanks dude, it means we are waiting tool to load the page, it adjust the miss communication between the tool and web page....

correct me if my understanding is wrong

Thanks

Cn we consider all wait commands as synchronization????

@ aditya yup.....you may
@subbuqat the tool here is actually being forced to delay its function till the http request is served.