Re-testing: Testing the application with various samples of
data is known as regression testing. we can also call this
as "Data Driven Test".

Regression Testing: Testing the application which is already
tested is known as regression testing. Here application new
build will be tested.

Regression Testing: Testing the application which is already
tested is known as regression testing and verifying whether 
cloed defect shows any impact on the application .

Re-testing: Testing the application with various samples of
data is known as Re-testing testing. we can also call this
as "Data Driven Test".

Regression Testing: Testing the application which is already
tested is known as regression testing. Here application new
build will be tested.

RE-TESTING - TEST THE APPLICATION WITH MULTIPLE TIMES WITH 
DIFFERENT TEST DATA TO CONFIRM THE FUNCTIONALTY OF 
APPLICATION ACCORDING TO THE REQUIRMENTS.

REGRASSION TESTING- TEST THE APPLICATION MULTIPLE TIMES 
WITH NEW MODIFICATION TO CHECKE THE UNCHAGED AREA OF APPLIC 
ATION AND IMPECT OF CHANGE ON APPLICATION.

hi friends
retesting: testing the previous defect fixes
 if we have 3 modules in a build,we got 10 defects ,after 
receving(rectifing)the build from dev team, we r going to 
be tested only these defects, is called "retesting". 
 with these defects and  before executed defects are also  
tested here in regression testing (i.e.. these defects r 
any cause to other problems)

regression:testing the application, by previous defects has 
made any changes to other parts of the application.

Regression Testing:Re-execution of test on the modified 
build with multiple test data.
  It also checks the modifications is effected in other 
functionality or not.

Retsting testing:Re-execution of test on the same build 
with multiple test data.

Re-Testing:Testing the application solving the bug is fixed or
not called as Re-Testing.


Regression Testing:
            On the modified build any side effects are
coming we are going to conduct the testing called as
Regression Testing.

Regression Testing : To ensure that changes in one part of 
the software has no ill effect in the other part of the 
software. Whenever the changes has made in the source code, 
a set of pre defined testcase has been executed, check 
whether any other portion of the sotware affected.

Re- test - Retesting means we testing only the certain part 
of an application again and not considering how it will 
effect in the other part or in the whole 
application.

Regression testing is done on modified build,to test 
whether the changes made on the build have effected the 
already existing functionality or not,i.e to check whether 
the old bugs are modified or not and also any new bugs are 
raised or not by the modification of old bugs.

Retesting is done on the same build with multiple sets of 
data.

Retesting is done to check whether the developer rectifies 
the defected modules or not. Whereas Regression Testing is 
done to find out whether the rectified modules affect the 
other modules or not

Regression Testing:
Objective is to check the new functionalites have been 
incorporated correctly with out failing the existing 
functionalities.

Retesting:
re-execution of testcases on same application build with 
diferent inputs or testdata

Regression testing---Reexecution of the test cases on 
modified building.

Re-testing--Re execuiton of the test cases on same building 
with different input data.