How to Change Wordpress comments url / word (rewrite_rule)

How can we change comment page to somthing else(like review)?

using add_rewrite_rule (); or somthing else

from:

http://ift.tt/1Ewzm6H http://ift.tt/184K1bI

etc...

to:

http://ift.tt/1EwzmDN http://ift.tt/184K1bK

etc...

Thanks