Difference between Dreadful and Frightening

DREADFUL vs FRIGHTENING: 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.

I. Full of dread or fear.
Full of respect, honor, or veneration.
Extremely disagreeable and unpleasant
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.

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

Terrifying, Direful, Terrorization, Terrorisation, Dreaded, Dire, Dread, Awful, Fearful, Fearsome, Dreadful, Terrible, Horrendous, Alarming, Horrific

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

Scary, Terrifying, Direful, Terrorisation, Dreaded, Dire, Dread, Awful, Fearful, Fearsome, Dreadful, Terrible, Horrendous, Alarming, Horrific

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.

Which ones were the most frightening or illuminating?
Losing your youngster noises absolutely horrifying and frightening.
Libra, and the frightening future of AI algorithms.
Each prayer is frightening in what it demands.
Being arrested can be a terribly frightening experience.
World War I is certainly frightening but real.
What happens in this judgment is just frightening.
Even this suggestion has frightening portents for some.
Hearing About Frightening Experiences Children can also learn to fear situations from hearing about frightening experiences.
As frightening as this experience can be, the financial risk that it poses can be equally frightening.