review: " it will conducts between the team people or with 
the other team.


Walkthrough: "here checking the processing of the 
development, is it regards to requirements are not.

Review: The need of this is to cover the missed 
out/slippages in the document and this can be performed in 
the various stages / phases. This is one of the best 
practice to enhance the quality of the product. One of this 
is Peer-to-peer review(BRS, SRS, FDS, DSD, Test plan / Test 
Design, Test condition, Test script, Test data). This can 
be done in the team (Eg. Testing team by doing peer to 
peer). This should be done by the experience person like 
(BA's, PM's, Senior developers, Test lead, Senior testers, 
Test Analyst)

Walkthrough : It is step by step simulation of the 
execution of a procedure, as when walking through code line 
by line, with an imagined set of inputs. The term has been 
extended to the review of material that is not procedural, 
such as data descriptions, reference manuals, 
specifications,