What is the distinction in law between ‘Seizure’ and ‘Detention’?

Denial of access to the owner of the property or the
person who possesses the property at a particular point
of time by a legal order/notice is called detention. Seizure
is taking over of actual possession of the goods by the
department. Detention order is issued when it is suspected
that the goods are liable to confiscation. Seizure can be
made only on the reasonable belief which is arrived at
after inquiry/investigation that the goods are liable to
confiscation.