Difference between Ugly Duckling and Nonentity

UGLY DUCKLING vs NONENTITY: NOUN

One that is considered ugly or unpromising at first but has the potential to become beautiful or admirable in maturity.
A young person who is ugly, but who is expected to become beautiful as they mature.
An ugly or unpromising child who grows into a beautiful or worthy person

A nonexistent thing
The state of not existing
A person of no influence
A person regarded as being of no importance or significance.
Nonexistence.
A thing not existing.
A person or thing of little or no account; an unimportant person; -- usually used as a disparaging term.
An unimportant or insignificant person
Something that does not exist or that exists only in the imagination.

Mangy, Sickly, Decrepit, Homely, Gamine, Eyesore, Unlovable, Ingenue, Gawky, Unlovely, Frumpy, Unloved, Frump, Ugly, Unattractive

Windbag, Cretin, Irrelevance, Dilettante, Nitwit, Ignoramus, Sycophant, Dullard, Imbecile, Dolt, Buffoon, Nincompoop, Nobody, Cypher, Cipher

Mangy, Sickly, Decrepit, Homely, Gamine, Eyesore, Unlovable, Ingenue, Gawky, Unlovely, Frumpy, Unloved, Frump, Ugly, Unattractive

Windbag, Cretin, Irrelevance, Dilettante, Nitwit, Ignoramus, Sycophant, Dullard, Imbecile, Dolt, Buffoon, Nincompoop, Nobody, Cypher, Cipher

As Pegram puts it, "the ugly duckling grew into a beautiful swan," and gave Pegram his moon walk.
We took our really ugly duckling and transformed it into a home style that we invisioned.
Perhaps the best known story about a swan is " The Ugly Duckling " fable.
Essentially, this book is the ugly duckling book about a horse.
The rain was still pouring down, an ugly duckling that never made it to swan.
The Bissell Steam Shot Deluxe is an ugly duckling that packs a punch.
Once again, I will be the big, fat, ugly duckling of my family.
Well, as it turned out, he was just a really ugly duckling.
Matt turned my Ugly Duckling Appartment into a beautiful Swan!
Participants: Luis Felipe Fabre and Ugly Duckling Presse Committee.

Her familiarity with violence juxtaposes the seemingly nonthreatening nonentity with skilled and deadly action.
Nonentity assets held by the CFTC include deposit fund balances, custodial fines, interest, penalties, and administrative fees receivable.
But until Nelly, St. Louis was a nonentity, except for a few footnotes.
LLC TO HOLD VACATION HOMESbetween the LLC form and a nonentity coownership arrangement.
The others immediately break languidly on residential home nonentity then pregnant me just before funds them.
Synonyms for young upstart include whippersnapper, nonentity, nobody, cypher, cipher, lightweight, nothing, pygmy, zero and zilch.
Such steadfastness reduces Heidegger, the far more important and original philosopher, to a nonentity.
There the priest is, in human rather than sacramental terms, a nonentity.
Bolshevik biographers to treat the young Stalin as a nonentity.
If in neither classification, then he was a mere nonentity.