The following categories of questions are as follows:
###newest featured faq votes active unanswered

Why can't there be subcategories for each of these categories?

i.e. "The newest unanswered question"

If this is a duplicate, I apologize.

The following categories of questions are as follows:

newest featured faq votes active unanswered

Why can't there be subcategories for each of these categories?

i.e. "The newest unanswered question"

If this is a duplicate, I apologize.