As a Noun:
1. A feeling of pity and sympathy for someone who is suffering. English = compassion.
2. The feeling of compassion you have for someone so that you do not punish them or treat them as severely as you could. English = mercy.
As a Verb or Adjective:
1. To feel pity and sympathy for someone who is suffering. English = (be) compassionate.
2. To feel compassion so that you do not punish someone or treat them as severely as you could. English = have mercy, (be) merciful.