Contribution vs Input - What's the difference?

As nouns the difference between contribution and input

is that contribution is something given or offered that adds to a larger whole while input is the act or process of putting in; infusion.

to put in; put on.

(en noun)

Something given or offered that adds to a larger whole.

An amount of money given toward something.

The act of contributing.

(wikipedia input)

(en noun)

The act or process of putting in; infusion.

That which is put in, as in an amount.

Contribution, or share in a contribution.

Something fed into a process with the intention of it shaping or affecting the outputs of that process.

* input device

To put in; put on.

To data.

The user inputs his date of birth and the computer displays his age.

To accept data that is entered.

* 2009 , J Stanley Warford, Computer Systems

The program inputs a value for the integer variable num and compares it with the constant integer limit.