Difference Between Unbounded task flow and Bounded task flow?

S. No.	Unbounded Task Flow	Bounded Task Flow
1.	It is not secured	Secured
2.	Multiple entry/exit point	Single entry point and multiple exit.
3.	Call one or more Bounded task flow.	Call other bounded task flow but not unbounded task flow
4.	It does not support parameters.	It support input parameters and return values.
5.	It does not support transactions.	It support transactions.