Contributory vs Tributary - What's the difference?

As adjectives the difference between contributory and tributary

is that contributory is of, pertaining to, or involving a contribution while tributary is related to the paying of tribute.

(river) A natural water stream that flows into a larger river or other body of water.

(en adjective)

Of, pertaining to, or involving a contribution

Tending to contribute to a result

* contributory negligence

(wikipedia tributary)

(tributaries)

(senseid) A natural water stream that flows into a larger river or other body of water.

A nation, state, or other entity that pays tribute.

; nation paying tribute * 1602 : , act V scene 2 *: As England was his faithful tributary .

*(stream which flows into a larger one) affluent

(-)

Related to the paying of tribute.

subordinate; inferior

* Milton

to grace his tributary gods

Yielding supplies of any kind; serving to form or make up, a greater object of the same kind, as a part, branch, etc.; contributing.

The Ohio has many tributary''' streams, and is itself '''tributary to the Mississippi.