Why is a junction diode used for rectification?

(N/A) junction diode is used for rectification because it exhibits unidirectional current flow properties.
$1$. When the diode is forward-biased,it offers very low resistance,allowing current to pass through it easily.
$2$. When the diode is reverse-biased,it offers very high resistance,effectively blocking the current.
$3$. This property allows the diode to convert alternating current $(AC)$,which changes direction periodically,into direct current $(DC)$,which flows in only one direction.
$4$. By allowing current to flow only during the positive half-cycle of the $AC$ input,the diode acts as a rectifier.