temperamental vs unreliable

temperamental and unreliable both are adjectives.

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

temperamental (adjective)	unreliable (adjective)
relating to or caused by temperament	not worthy of reliance or trust
subject to sharply varying moods	dangerously unstable and unpredictable
likely to perform unpredictably	liable to be erroneous or misleading
	lacking a sense of responsibility