miseri: comes from the word misery.Cordia: means heart.Mercy is a heart that is in need of the love of the piety of the compassion of God to man.
It is the human feeling that makes someone feel sorry for the pain of their fellowmen. Predisposition to pity the sufferings of others. Have heart or compassion, to defend those who are in misery.
miser = misery cordia = out of mercy out of misery
It is an abajamiento, make me like the other, God's mercy is so infinite because the became one of us to show us his love. That is why I think that the word hurts not in line with the word mercy.