Nouns

(n)contribution, part, sharethe effort contributed by a person in bringing about a result“I am proud of my contribution in advancing the project”, “they all did their share of the work”
(n)contribution, donationa voluntary gift (as of money or service or ideas) made to some worthwhile cause
(n)contribution, donationact of giving in common with others for a common purpose especially to a charity
(n)contributionan amount of money contributed“he expected his contribution to be repaid with interest”
(n)contributiona writing for publication especially one of a collection of writings as an article or story