What is the Difference between current and current density?

Electric current is the rate of [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/elecur.html#c2 charge] flow past a given point in an electric circuit, measured in Coulombs/second which is named Amperes through any cross sectional area,which can be measured by Pi*r*r. [1coulomb/second=1Ampere]

while Electric current density is the measure of electric charges passing through a conductor in a electric circuit in a constant cross sectional area of 1 meter square.[1Ampere/Meter square]