undependable vs temperamental

undependable and temperamental both are adjectives.

Word	Noun	Adjective	Verb	Adverb
undependable	No	Yes	No	No
temperamental	No	Yes	No	No

undependable (adjective)	temperamental (adjective)
not worthy of reliance or trust	relating to or caused by temperament
liable to be erroneous or misleading	subject to sharply varying moods
	likely to perform unpredictably