Both are same why because both are used for the project 
satisfications.

No both are not same.

Quality plan is the plan which is used by the Quality 
people means that department which is responsible for 
process implementation, facilitation and support

Test Plan is the plan which talks about the when, how,who, 
where and what to test of an application

I wud like to give the High level deifference between 
Quality Plan and Test Plan.
Quality Plan is prepared by QA department with the help of 
Management. It is only one document which derives the 
quality of any application preared in the organization.

Whereas Test plan can be different for differnt 
application.and it is prepared by testing team.

Hi,

Both are different.

Qulaity plan preapred by QA People.

Test Plan prepared by Test Lead or Test Enginner

Quality Plan is a plan intended by the company to implement 
in order to achieve the quality requirement of the contract 
to ensure customers satisfaction. 
Test plan are various inspections and testing planned to 
perform to satisfy and meet the requirement the standards.