Is it OK to to answer a GBK question suggesting the same term already offered in another answer?
Yes. A GBK answer includes a term, a definition and at least one example sentence. The term is only a part of the answer, and it could happen that the second answer offering the same term includes, for instance, a better definition. Time should not play such a central role in GBK, where a better answer should be more relevant than a faster one.