After reading about Erlang's lighweight processes I was pretty much sure that they were "green threads". Until I read that there are differences between green threads and Erlang's processes. But I don't get it.
What are the actual differences?
Green Threads can share data memory amongst themselves directly (although synchronization is required of course).
Erlang doesn't use "Green Threads" but rather something closer to "Green Processes": processes do not share data memory directly but do so by "copying" it (i.e. having independent copies of the source data).