How do you differentiate between biosphere reserve and wildlife sanctuary?

Explanation

Wildlife sanctuary is a protected land area reserved for the conservation of wild animals and birds. Hunting is strictly prohibited there.
A biosphere reserve is a specified land area in which multiple use of land is permitted for preserving biodiversity. It is divided into three zones for different activities:
(i) Core zone where no human activity is permitted. It is also known as natural zone.
(ii) Buffer zone where limited human activity is allowed.
(iii) Manipulation zone where several human activities are permitted.