憐れ[aware] pity
憐れみ[awaremi] pity
憐れむ[awaremu] to commiserate
哀憐[airen] pity
可憐[karen] sweet (e.g. young girls, flowers blooming)

同病相憐れむ[doubyouaiawaremu] fellow sufferers pity each other
憐愍[renbin] pity
純情可憐[junjoukaren] pure of heart and beautiful
愛憐[airen] sympathy
憐情[renjou] compassion