contribution contribution /ˌkɑːntrəˈbjuːʃən/

noun

1. () The effort contributed by a person in bringing about a result  ( part , share , contribution )
   the effort contributed by a person in bringing about a result
    I am proud of my contribution in advancing the project
   I am proud of my contribution in advancing the project
    They all did their share of the work
   they all did their share of the work
   
2. () A voluntary gift (as of money, service or ideas) made to some worthwhile cause  ( donation , contribution )
   a voluntary gift (as of money, service or ideas) made to some worthwhile cause
     Mark's contribution to the charity helped provide food for the homeless.
   Mark's contribution to the charity helped provide food for the homeless.
   
3. () Act of giving in common with others for a common purpose especially to a charity  ( donation , contribution )
   act of giving in common with others for a common purpose especially to a charity
     Her contribution to the project was invaluable.
   Her contribution to the project was invaluable.
   
4. () An amount of money contributed  ( contribution )
   an amount of money contributed
    He expected his contribution to be repaid with interest
   he expected his contribution to be repaid with interest
   
5. A writing for publication especially one of a collection of writings as an article or story  ( contribution )
   a writing for publication especially one of a collection of writings as an article or story