supposed vs questionable

supposed and questionable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
supposed	No	Yes	No	No
questionable	No	Yes	No	No

supposed (adjective)	questionable (adjective)
required or under orders	subject to question
doubtful or suspect	able to be refuted
based primarily on surmise rather than adequate evidence
mistakenly believed