What does Dua mean?
Dua (دعاء, du'a') means 'prayer, supplication, invocation', from the Arabic root d-'-w. In Islamic practice du'a refers specifically to personal prayer or calling upon God.
What does Layan mean?
Layan (ليان) comes from the Arabic root l-y-n ('to be soft'), carrying the sense of softness, gentleness and an easy, comfortable life. Some sources add a secondary 'ease/prosperity of living' nuance.