Different Label Names on the same Language

Hello!

I would like to get help from you guys if you can, i am building 2 FPD UI, the problem is that i want to use the same Modules for different purposes, so i would like to change the label names of them, so for example the Design Module would be called Title 1, and on the other UI it would be called Title 2.

How can i achieve this? - Thro custom CSS?

Please help, thank you!