How do I rename module tabs and change forum icons?

[Throwam]

See the photos below for reference.

Firstly, I'd like to be able to change the text on all the words circled in red, specifically "Forums" to "Boards" and "Groups"...

[Throwam]

This is something that I feel would be a defining feature if it were added, and I would encourage the vBulletin staff to seriously consider it. A gallery module where users can upload, upvote, and comment...