Difference between Foolish and Vain

FOOLISH vs VAIN: NOUN

Insignificant; trivial.
Embarrassed; abashed.
Capable of arousing laughter; absurd or ridiculous.
Lacking or exhibiting a lack of good sense or judgment; silly.
Devoid of good sense or judgment
Marked with, or exhibiting, folly; void of understanding; weak in intellect; without judgment or discretion; silly; unwise.
Such as a fool would do; proceeding from weakness of mind or silliness; exhibiting a want of judgment or discretion.
Absurd; ridiculous; despicable; contemptible.
Lacking good sense or judgement; unwise.
Resembling or characteristic of a fool.
Having or revealing stupidity

Unproductive of success
Effecting no purpose; pointless, futile.
Having very little substance
Overly proud of oneself, especially when concerning appearance
Showy; ostentatious.
Destitute of force or efficacy; effecting no purpose; fruitless; ineffectual.
Having no real substance, value, or importance; empty; void; worthless; unsatisfying.
Foolish.
Having or showing excessive pride in one's appearance or accomplishments; conceited.
Lacking substance or worth.
Not yielding the desired outcome; fruitless.
Characteristic of false pride; having an exaggerated sense of self-importance

Synonyms Silly, Foolish (see absurd); shallow, brainless, harebrained, simple.
Slight; insignificant.
Denoting or indicative of folly.
Ridiculous; contemptible.
Proceeding from or prompted by folly; exhibiting a want of discretion or discrimination; silly; vain; trifling.
Like a fool; manifesting folly; deficient in understanding, sense, or discretion; weak in intellect or judgment; unwise.

Having no real value or importance; worthless; unsubstantial; empty; trivial; idle.
Producing no good result; destitute of force or efficacy; fruitless; ineffectual; useless; futile; unavailing.
Light-minded; foolish; silly.
Proud of petty things or of trifling attainments or accomplishments; elated with a high opinion of one's personal appearance, manners, or the like; courting the admiration or applause of others; conceited; self-complacent; also, proceeding from or marked by such pride or conceit: as, to be vain of one's figure or one's dress.
Showy; ostentatious; pretentious.
Bootless, abortive.
See egotism.
Characteristic of false pride
(idiom) (in vain) In an irreverent or disrespectful manner.
(idiom) (in vain) To no avail; without success.

Insane, Nonsensical, Unreasonable, Harebrained, Fatuous, Fool, Preposterous, Absurd, Asinine, Ridiculous, Misguided, Ludicrous, Silly, Stupid, Unwise

Pointless, Unsuccessful, Desperate, Self conceited, Swollen headed, Sleeveless, Swollen, Proud, Unproductive, Bootless, Egotistical, Egotistic, Conceited, Fruitless, Futile

Insane, Nonsensical, Unreasonable, Harebrained, Fatuous, Fool, Preposterous, Absurd, Asinine, Ridiculous, Misguided, Ludicrous, Silly, Stupid, Unwise

Pointless, Unsuccessful, Desperate, Swollen headed, Self conceited, Sleeveless, Swollen, Proud, Unproductive, Bootless, Egotistical, Egotistic, Conceited, Fruitless, Futile

Anyone not using the AMEX deal is foolish.
MASTER: That would be very foolish of you.
Are Economic Giants Penny Wise But Pound Foolish?
Baloo knows it; I know it; the Pack know it; and even the foolish, foolish deer know.
So, the preaching of the gospel is not foolish, but the question today is: Is there such a thing as foolish preaching?
You looked foolish the last two times you said it for the previous two contracts, and you will look foolish again this time.
Of all the foolish Fears of Humankind, Fear of the Future is by far the most foolish.
There are no foolish trades, there are only foolish people.
Young and Foolish Young and foolish Why is it wrong to be Young and foolish?
That foolish idea may not be so foolish after all.

But if Christ has not been raised up, our preaching is certainly in vain, and our faith is in vain.
We can dispense with other things for our vain pleasures: we have done as much for sin, for vain sports, etc.
VAIN can be diagnosed by means of colposcopically directed biopsy, but the colposcopic appearance of VAIN is slightly different from that of CIN.
Lord your God in vain, for the Lord will not hold him guiltless who takes His name in vain.
In vain, in vain have I spoken so much!
As the philosophers say: Nature does nothing in vain, and more causes are in vain when fewer will suffice.
If the Messiah has not been raised, then our preaching is vain, and your faith also is vain.
Have you suffered so many things in vain; if indeed it was in vain?
Vain gold, vain lore, and yet might choose our way!
Howbeit that prophet is vain, and answers vain things to those who are themselves vain.