Difference between Confident and Certain

CONFIDENT vs CERTAIN: NOUN

A definite but unstated quantity.
Certainty.
In the Roman Catholic Church, prayers said daily at mass for specified persons, as for the members of a guild unable to keep a priest of its own, but who paid so much to a church to have a daily remembrance. Also certainty.
A certain number or quantity.

Established beyond doubt or question; indisputable.
Sure to come or happen; inevitable.
Definite; fixed.
Established irrevocably
Capable of being depended on
Certain to occur; destined or inevitable
Exercising or taking care great enough to bring assurance
Having or feeling no doubt or uncertainty; confident and assured
Definite but not specified or identified
Having or showing confidence; assured.
Assured in mind; having no doubts; free from suspicions concerning.
Determined; resolved; -- used with an infinitive.
Not to be doubted or denied; established as a fact.
Actually existing; sure to happen; inevitable.
Unfailing; infallible.
Fixed or stated; regular; determinate.
Not specifically named; indeterminate; indefinite; one or some; -- sometimes used independenty as a noun, and meaning certain persons.
Assuredly.
Sure, positive, not doubting.
Capable of being relied on; dependable.
Named but not known or previously mentioned.
Not specified or identified but assumed to be known.
Not great; calculable.
Reliable in operation or effect
Perceptible; noticeable.

Certainly; assuredly.
Fixed; determinate; definite; specified; prescribed; settled beforehand: as in the phrase “at a time certain.”
Indefinite in the sense of not being specifically named; known but not described: applied to one or more real individual objects or characters, as distinguished from a class of objects or an order of characters; coming under particular observation, but undefined, as to kind, number, quantity, duration, etc.; some particular: as, a lady of a certain age.
Some (known but unspecified): followed by of.
Established as true or sure; placed beyond doubt; positively ascertained and known; unquestionable; indisputable.
Capable of being depended on; trustworthy.
Unfailing; unerring; sure; positive: as, a certain remedy for rheumatism.
Assured; free from doubt regarding: used absolutely, or with of, and formerly sometimes with on.
Sure: with an infinitive: as, he is certain to be there to-morrow.
Synonyms Undeniable, unquestionable, undoubted, indubitable, indisputable, incontrovertible, inevitable. Sure, Positive, Certain, Confident, etc. (see confident); unhesitating, undoubting.
Destined or inevitable
Certain to occur
Definitely known
Confident and assured
(determiner) Having been determined but unspecified. The quality of some particular subject or object which is known by the speaker to have been specifically singled out among similar entities of its class.
(idiom) (for certain) Without doubt; definitely.

Optimistic, Hopeful, Self assured, Self confident, Bold, Certain, Surefooted, Cocksure, Positive, Capable, Overconfident, Sure, Reassured, Assured, Convinced

Reliable, Doomed, Sealed, Convinced, Positive, Destined, Indisputable, Confident, Fated, Bound, Predestined, Foreordained, Careful, Sure, Definite

Optimistic, Hopeful, Self confident, Self assured, Bold, Certain, Surefooted, Cocksure, Positive, Capable, Overconfident, Sure, Reassured, Assured, Convinced

Reliable, Doomed, Sealed, Convinced, Positive, Destined, Indisputable, Confident, Fated, Bound, Predestined, Foreordained, Careful, Sure, Definite

That made me feel really good and confident.
But I am confident things will work out.
Therefore, be confident in the choice you make.
Kristi made him feel super prepared and confident.
The Trust is a Disability Confident Employer and is working towards Disability Confident Leader status.
When you feel relaxed and confident than your listener is more likely to feel confident in you.
Author should sound confident, therefore, select something that you are confident in, subject that can be defended with vocal arguments or presentation project.
The practice tests will make you confident and help you become a confident driver of motor vehicles in New York.
You were so calm, relaxed and confident that this ensured that I felt confident too.
However, you can also intentionally use confident body language to feel more confident.

However people have to realize the cameras only reach a certain angle and a certain range.
Certain elements have default styles or behaviors that make certain combinations likely to lead to confusion.
King to renounce certain rights, respect certain legal procedures and accept that his will could be bound by the law.
Patients have certain beliefs about their health, treatments, and capacity to perform certain techniques with aerosol devices.
This function will visually indicate when a certain defense status is activated while using certain skills.
Genes within these clusters are expressed in certain body segments at certain stages of development.
But the visitation can only happen on certain days during certain times.
Or an attempt at censorship for certain artists and certain songs.
Certain materials may not lend themselves to certain pitches.
You should find certain keys to open certain doors.