Difference between Painful and Dreadful

PAINFUL vs DREADFUL: NOUN

That which is fearful or terrible: used only in the phrases penny dreadful, shilling dreadful, to denote a tale of vulgar sensationalism sold at a small price, or a cheap sensational newspaper or periodical.
A shocking or sensational crime.
A shocking or sensational report of a crime.

Requiring care and labor; difficult or irksome.
Distressing or embarrassing.
Causing mental anguish or suffering.
Marked by or requiring great care and diligence.
Full of or giving pain.
Exceptionally bad or displeasing
Causing physical discomfort
Causing physical or psychological pain
Requiring labor or toil; difficult; executed with laborious effort.
Full of pain; causing uneasiness or distress, either physical or mental; afflictive; disquieting; distressing.
Painstaking; careful; industrious.
Causing misery or pain or distress

They can be very painful"
Synonyms and Racking, agonizing, tormenting, torturing, excruciating, arduous, severe, grievous, trying, afflictive.
Painstaking; industrious; busy; careful; laborious; hard-working.
That requires or necessitates labor, exertion, care, or attention; troublesome; difficult; toilsome.
That gives or is characterized by pain; of a nature to pain, render uneasy, or inflict suffering, whether bodily or mental; distressing: as, a painful operation in surgery; a painful effort; a painful subject.

I. Full of dread or fear.
Full of respect, honor, or veneration.
Exciting or attended by great dread, fear, or terror; terrible; formidable; direful: as, a dreadful storm; a dreadful invasion.
Awful; venerable; awe-inspiring.
Synonyms Fearful, Frightful, etc. (see awful); terrific, horrible, horrid, dire, direful, tremendous.
Extremely disagreeable and unpleasant

Irritating, Awful, Agonized, Dreadful, Poignant, Uncomfortable, Bitter, Terrible, Harrowing, Agonizing, Unpleasant, Torturous, Traumatic, Wrenching, Excruciating

Fearsome, Dreaded, Alarming, Painful, Unspeakable, Dire, Unpleasant, Frightening, Bad, Abominable, Horrific, Awful, Atrocious, Terrible, Horrendous

Irritating, Awful, Agonized, Dreadful, Poignant, Uncomfortable, Bitter, Terrible, Harrowing, Agonizing, Unpleasant, Torturous, Traumatic, Wrenching, Excruciating

Fearsome, Dreaded, Alarming, Painful, Unspeakable, Dire, Unpleasant, Frightening, Bad, Abominable, Horrific, Awful, Atrocious, Terrible, Horrendous

This may be painful, but is nonetheless beneficial.
Arthritis of the hand can be very painful.
This buildup of fluid can be very painful.
Sanctions are more painful when they cause more damage than expected, or when a period of growing prosperity gives way to a painful decline.
Produce Abscesses produce painful swelling at the anus as well as painful defecation.
If patient is bearing weight there is a painful limp to be observed as walking is painful.
When hands are swollen and painful from arthritis, cold packs can numb the painful joints and reduce swelling.
Maria, are the suffering in Purgatory more painful than the most painful sufferings on earth?
The symptoms of endometriosis include painful menstrual cramps, painful intercourse, diarrhea, constipation, and nausea.
This condition can cause painful bleeding, cramps and painful intercourse.

Asda, absolutely dreadful, low alcohol and no taste.
It is both an encouraging and dreadful event.
Shiloh has been a dreadful blow to us.
It may have been that dreadful Queensway Cathedral.
Dreadful system and unfair on so many levels.
He has moved to somewhere that is dreadful.
She told Jury about the whole dreadful experience.
Attitude: It is dreadful to be in danger.
The old way is absolutely dreadful in comparison.
The emotion inspired by something dreadful and sublime; an undefined sense of the dreadful and the sublime; reverential fear, or solemn wonder; profound reverence.