unreliable vs uncertain

unreliable and uncertain both are adjectives.

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

unreliable (adjective)	uncertain (adjective)
not worthy of reliance or trust	not established beyond doubt; still undecided or unknown
dangerously unstable and unpredictable	lacking or indicating lack of confidence or assurance
liable to be erroneous or misleading	not certain to occur; not inevitable
lacking a sense of responsibility	not established or confirmed
	ambiguous (especially in the negative)
	not consistent or dependable
	subject to change