unhinged vs demented

unhinged and demented both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unhinged	No	Yes	No	No
demented	No	Yes	No	No

As adjectives, unhinged and demented are synonyms defined as:

Other synonyms of unhinged include brainsick, crazy, disturbed, mad, sick, unbalanced.

unhinged (adjective)	demented (adjective)
affected with madness or insanity	affected with madness or insanity