what is the difference between panty liners and sanitary pads??

A. The sanitary pads are basically used at the time of your period when you have a full flow and panty liners are basically use when you have sporting are you are having too much of vaginal discharge in either of the cases you can comfortably use a panty liner and even on a daily basis if you have any kind of a discharge its like one quarter size of a sanitary pad