As nouns the difference between sequestration and quarantine
is that
sequestration is sequestration while
quarantine is a desert in which christ fasted for 40 days according to the bible or
quarantine can be a sanitary measure to prevent the spread of a contagious plague by isolating those believed to be infected.
As a verb quarantine is
to retain in obligatory isolation or separation, as a sanitary measure to prevent the spread of contagious disease.