Difference between Unreliable and Uncertain

UNRELIABLE vs UNCERTAIN: ADJECTIVE

To make or cause to be uncertain.
Not certain; doubtful.
Not known as regards quantity or extent; indefinite; problematical: as, an uncertain number of independent voters; a person of uncertain age.
Having doubts; without certain knowledge; not sure.
Not sure as to aim or effect desired.
Unreliable; insecure; not to be depended on.
Not firm or fixed; vague; indeterminate in nature; fluctuating.
Undecided; hesitating; not resolved.
Not steady; fitful.
Liable to change; fickle; inconstant; capricious; irresolute.
Not inevitable
Not certain to occur
Still undecided or unknown
Not established beyond doubt

Incorrect, Reliable, Inaccurate, Untrusty, Uncertain, Treacherous, Irresponsible, Dangerous, Temperamental, Unsafe, Unsound, Fallible, Erratic, Untrustworthy, Undependable

Unreliable, Variable, Undependable, Insecure, Chancy, Indefinite, Dubious, Changeable, Hesitant, Ambiguous, Ambivalent, Iffy, Doubtful, Unsettled, Unsure

Incorrect, Reliable, Inaccurate, Untrusty, Uncertain, Treacherous, Irresponsible, Dangerous, Temperamental, Unsafe, Unsound, Fallible, Erratic, Untrustworthy, Undependable

Unreliable, Variable, Undependable, Insecure, Chancy, Indefinite, Dubious, Changeable, Hesitant, Ambiguous, Ambivalent, Iffy, Doubtful, Unsettled, Unsure

They also stated that ALT tests were unreliable.
Rail conditions are poor, limited, and service unreliable.
As a result, waste data is notoriously unreliable.
This just makes you look bitter and unreliable.
Most developing countries have weak and unreliable documents and the poorer people in these countries do not have even those unreliable documents.
Accordingly, because this merger simulation is based upon these unreliable data, the court concludes that the simulation results are likewise unreliable.
An inconsistent or unreliable test produces unreliable results that only inconsistently support the intended inferences of the test.
When faced with expert testimony that contains both reliable and unreliable opinions, district courts often exclude only the unreliable testimony.
It was a case of unreliable statements plus unreliable science.
Unreliable: The Persistent Memory Region has become unreliable.

The subjects were urged to guess when uncertain.
Biblical scholarship, however, holds that this is uncertain.
Of uncertain affinity; to be able or possible.
Uncertain rewards powerfully motivate repetition and habit formation.
Right now is an unprecedented and uncertain time.
Australia will be isolated with an uncertain future.
Statute of Limitations The Uncertain Future of the Uncertain Tax Position Schedule.
Whether current doctrines of standing, justiciability, and political question would preclude this judicial supervision is uncertain, and was left uncertain in the congressional debates.
We include this uncertain number in the number of significant figures, but, our readers know that it is uncertain.
Liu B: Uncertain set theory and uncertain inference rule with application to uncertain control.