What are the differences between ecosystem and biogeocenosis?

The concepts “biogeocenosis” and “ecosystem” have the same definition. This is a group of living organisms (animals, plants, fungi and microorganisms) that interact with each other, are in food chains and live in the same territory with approximately the same conditions. The forest can be called both a biogeocenosis and an ecosystem. But there are still differences in these concepts. Biogeocenosis is part of the ecosystem. So one ecosystem can include several biogeocenoses at once. The definition of an ecosystem is more generalized.