We have a 7 years website and two months duplicate. Our website "example.com" has traffic only variants of "example" word and does not gain anymore traffic from other target words excluding "example". We have created a duplicate of the same site "example.ws" and it has started to gain more traffic without "example" word. So how this situation takes place, any idea? Does our main domain has given a penalty, if so how can we understand where this penalty comes from?