arguable vs debatable

arguable and debatable both are adjectives.

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

As adjectives, arguable and debatable are synonyms defined as:

Other synonyms of arguable include disputable, moot.

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