Contribution is on the Academic Vocabulary List.

A contribution is something that you give or add.
Technology to reduce pollution could make a significant contribution to the solution.

Some of his most important early contributions were his detailed descriptions and illustrations.

Their contribution in October has been revised down from £300million to the same level.
The money you give to someone, especially for a donation, is your contribution.
The amount of work you did on a project.
His contribution was very low. He did almost nothing.

Noun