disputable vs arguable

disputable and arguable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
disputable	No	Yes	No	No
arguable	No	Yes	No	No

As adjectives, disputable and arguable are synonyms defined as:

Other synonyms of disputable include debatable, moot.

disputable (adjective)	arguable (adjective)
capable of being disproved	open to argument or debate
open to argument or debate	capable of being supported by argument