Topic: How to Change Labels

We use V1.4.4 as a job board.

On the "home" page where the index of categories and their forums are first shown, we need to change the label under each category from "Forums" to "Boards".

Also in the upper right corner we need to change links "Active topics & Unanswered topics" to "Active openings & Unanswered openings"

We cannot find where the above labels are contained so we can change them. Can anyone point us to them??