الرحمن الرحيم
The Entirely Merciful, the Especially Merciful. (Saheeh International)
I will simply render this as :
The Rahman, The Raheem
Both the words Rahman and Raheem come from the same root Rahm/ ر ح م.
Root Meaning:
The womb of the mother was called Rahm. (Mu'jam Al Isthtiqaaqi,Raghib,Lisan