Kindness is a type of behavior marked by acts of generosity, consideration, rendering assistance, or concern for others, without expecting praise or reward in return. It is a subject of interest in philosophy, religion, and psychology.

Compassion is a social feeling that motivates people to go out of their way to relieve the physical, mental, or emotional pains of others and themselves. Compassion is sensitivity to the emotional aspects of the suffering of others. When based on notions such as fairness, justice, and interdependence, it may be considered partially rational in nature.