What do you mean by Dynamic and transient behavior of diode?

A diode is characterised by its static transfer function, i.e. the I/V curve for forward and backward volts, how the junction capacitance varies with reverse voltage.How the temeprature varies with power. But the dynamic behavior of diodes is expressed by the response to steep edges at turn on (i.e the length of delay in current turning on in response to forward volts) and turn off (how long before the charge carriers are all swept out of the diode junction and it is turned off.)