Difference between Questionable and Debatable

QUESTIONABLE vs DEBATABLE: ADJECTIVE

Able to be refuted
Open to doubt or challenge; problematic.
Not yet determined or specified.
Of dubious morality or respectability.
Admitting of being questioned; inviting, or seeming to invite, inquiry.
Liable to question; subject to be doubted or called in question; problematical; doubtful; suspicious.
Problematic; open to doubt or challenge
Of dubious respectability or morality
Subject to question

Capable of being disproved
Open to argument or debate
Being such that formal argument or discussion is possible.
Open to dispute; questionable.
In dispute, as land or territory claimed by more than one country.
Liable to be debated; disputable; subject to controversy or contention; open to question or dispute.
A tract of land between the Esk and the Sark, claimed by both England and Scotland; the Batable Ground.
Controversial. Not fully proved, open to debate, sometimes used humorously.
Of a person, argumentative.
A fitting subject for debate.
Open to doubt or debate

Capable of being questioned or inquired of; inviting or seeming to invite inquiry or conversation.
Liable to question; suspicious; doubtful; uncertain; disputable: as, the deed is of questionable authority; his veracity is questionable.

Admitting of debate or argument; disputable; subject to controversy or contention; questionable: as, a debatable question; debatable claims.

Supposed, Apocryphal, Deniable, Suspect, Refutable, Alleged, Equivocal, Suspicious, Fishy, Problematical, Shady, Problematic, Debatable, Doubtful, Dubious

Objectionable, Reprehensible, Disputed, Contested, Contentious, Doubtful, Dubious, Contestable, Problematic, Controversial, Problematical, Questionable, Moot, Disputable, Arguable

Supposed, Apocryphal, Deniable, Suspect, Refutable, Alleged, Equivocal, Suspicious, Fishy, Problematical, Shady, Problematic, Debatable, Doubtful, Dubious

Objectionable, Reprehensible, Disputed, Contested, Contentious, Doubtful, Dubious, Contestable, Problematic, Controversial, Problematical, Questionable, Moot, Disputable, Arguable

Histopathology should be considered to discern questionable lesions.
Implement procedures for follow up on questionable cases.
Any questionable purchases are reimbursed by the employees.
The value of determining rectal temperature is questionable.
Report: Steph Curry, Kevin Durant questionable tomorrow vs.
Might some of those restrictions be constitutionally questionable?
The evidence behind this dietary strategy is questionable.
Propose removing this verbiage as it is questionable whether this is relevant given the amount of information available and possibly ethically questionable.
Do report coupons you see that look questionable by sending any valuable information you have about where you saw or received a questionable coupon.
We have software on all our electronics that alerts each other if we go to questionable sites or search questionable content, etc.

Now, that is an arguable and debatable point.
Conaway, a motion to table is not debatable.
Moreover, some of the news have debatable sources.
First, the legitimacy of military conscription is debatable.
Provide your thesis, which needs to be debatable.
To quote Henry Ford, history is politely debatable.
Treating as absolute or uncontestable eminently debatable propositions.
If another motion is pending, an appeal is not debatable; if no motion is pending the appeal is debatable.
The motion is debatable only if the motion to be reconsidered is itself debatable.
Senate to further limit debate on a resolution, debatable motion, or appeal is not debatable.