Contribution

Contribution is one of the six human needs, it does not need to be financial as it may be an act of service... and it is also not limited to charity. Contribution is the act of giving without expectation of a return, it comes from the heart.
Contribution can be defined as:

• the part played by a person in bringing about a result; "I am proud of my contribution”
• a voluntary gift (as of money or service or ideas) made to some worthwhile cause
• act of giving in common with others for a common purpose especially to a charity