contributory vs contributing

contributory and contributing both are adjectives.

Word	Noun	Adjective	Verb	Adverb
contributory	No	Yes	No	No
contributing	No	Yes	No	No

As adjectives, contributory and contributing are synonyms defined as:

contributory and contributing: tending to bring about; being partly responsible for

Other synonyms of contributory include conducive, contributive, tributary.

contributory (adjective)	contributing (adjective)
tending to bring about; being partly responsible for	tending to bring about; being partly responsible for