the act of contributing.

something contributed.

an article, story, drawing, etc., furnished to a magazine or other publication.

an impost or levy.

Insurance . the method of distributing liability, in case of loss, among several insurers whose policies attach to the same risk.

noun

addition , a hand , alms , augmentation , benefaction , beneficence , bestowal , charity , donation , do one’s part , gifting , grant , handout , helping hand , improvement , increase , input , present , significant addition , subscription , supplement , write-off , gift , offering , article , payment , share , writing