Difference between Sincere and Fervent

SINCERE vs FERVENT: ADJECTIVE

Pure; unadulterated.
Being without hypocrisy or pretense; true.
Not feigned or affected; genuine.
Open and genuine; not deceitful
Being in reality what it appears to be; having a character which corresponds with the appearance; not falsely assumed; genuine; true; real.
Pure; unmixed; unadulterated.
Whole; perfect; unhurt; uninjured.
Honest; free from hypocrisy or dissimulation.
Earnest; meaning what one says or does; truthful.
Meant truly or earnestly.
Characterized by a firm and humorless belief in the validity of your opinions

Extremely hot
Sincerely or intensely felt
Characterized by intense emotion
Having or showing great emotion or zeal; ardent.
Extremely hot; glowing.
Hot; glowing; boiling; burning.
Warm in feeling; ardent in temperament; earnest; full of fervor; zealous; glowing.
Exhibiting particular enthusiasm, zeal, conviction, persistence, or belief.
Having or showing emotional warmth, fervor, or passion.
Glowing, burning, very hot.

Synonyms and Fair, Open, etc. (see candid); Cordial, Sincere, etc. (see hearty), unfeigned, undissembling, artless, heartfelt.
Open and genuine
Not deceitful
Morally pure; undepraved; upright; virtuous; blameless.
Free from duplicity or dissimulation; honest in speech or intention; guileless; truthful; frank.
Unalloyed or unadulterated by deceit or unfriendliness; free from pretense or falsehood; honestly felt, meant, or intended: as, a sincere wish; a sincere effort.
Having no admixture; free; clear: followed by of.
Pure; unmixed; unadulterated; free from imitation; good throughout: as, sincere work.
Sound; whole; unbroken; without error, defect, or injury.

Hot; burning; glowing: as, a fervent summer; fervent rays.
Ardent; warmly earnest; animated; eager; vehement: as, fervent zeal; fervent piety.
Synonyms Eager, zealous, fervid, impassioned.
(archaic) extremely hot, burning, or glowing

Heart whole, Bona fide, Dear, Serious, Solemn, Devout, True, Unfeigned, Earnest, Fervent, Wholehearted, Cordial, Honest, Genuine, Heartfelt

Staunch, Devout, Fanatical, Vehement, Burning, Hot, Cordial, Torrid, Fiery, Perfervid, Sincere, Impassioned, Passionate, Fervid, Ardent

Heart whole, Bona fide, Dear, Serious, Solemn, Devout, True, Unfeigned, Earnest, Fervent, Wholehearted, Cordial, Honest, Genuine, Heartfelt

Staunch, Devout, Fanatical, Vehement, Burning, Hot, Cordial, Torrid, Fiery, Perfervid, Sincere, Impassioned, Passionate, Fervid, Ardent

Sincere wishes on your anniversary, Mom and Dad!
One integral and sincere confession within nine days.
Please believe in my feelings of sincere friendship.
Please be reflective and sincere in your discussion.
Crown patrons has often been read as sincere.
Finallymy most sincere thanks to my wife Lauren.
He is childlike, simple, humble, sincere, and forgiving.
Heather Price is sincere, laid back and professional.
Those sincere men who told them so believed it because an earlier generation of sincere men had told them the very same thing.
Her narratives combine sincere anxiety and sincere compassion.

Such is the power of definite, specific, fervent prayer.
Our desire of discharge will be the more fervent.
Our spirits most fervent we place in thy care.
It makes them even more fervent in their beliefs.
Shining, hot, intense, ardent, excited, fiery, fervid, fervent.
Yet, for now, our heartsare not very fervent.
Which her essayd with many a fervent tit.
Converts, of course, make the most fervent believers.
Thus a less fervent act of charity is not so great a good as a fervent act, but it is not an evil.
The downside is that the more fervent one half of your audience is, the other side is often just as, if not more, fervent.