Difference between Impractical and Screwball

IMPRACTICAL vs SCREWBALL: NOUN

A pitch with reverse spin that curves toward the side of the plate from which it was thrown
A whimsically eccentric person
A pitched ball that curves in the direction opposite to that of a normal curve ball.
An eccentric, impulsively whimsical, or irrational person.
A pitch thrown with added pressure by the index finger and a twisting wrist motion resulting in a motion to the right when thrown by a right-handed pitcher.
One who behaves in a crazy manner.

Impracticable, Unworkable, Unfeasible, Half baked, Unfunctional, Wild eyed, Screwball, Visionary, Armchair, Airy, Romantic, Softheaded, Utopian, Crazy, Quixotic

Kook, Insane, Weirdo, Psycho, Wacko, Lunatic, Half baked, Impractical, Nut, Crank, Fruitcake, Nutcase, Crackpot, Softheaded, Crazy

Impracticable, Unworkable, Unfeasible, Wild eyed, Unfunctional, Half baked, Screwball, Visionary, Armchair, Airy, Romantic, Softheaded, Utopian, Crazy, Quixotic

Kook, Insane, Weirdo, Psycho, Wacko, Lunatic, Half baked, Impractical, Nut, Crank, Fruitcake, Nutcase, Crackpot, Softheaded, Crazy

This also quickly becomes impractical with large numbers.
More housing in that area is totally impractical.
Also, this is impractical for large wind turbines.
My siblings and I hated such impractical directives.
Crossbows though so it gets impractical later on.
Having allocated massive amounts of memory is impractical.
Impractical Jokers Edmondson is a British reality series!
The systematic display on the parking places of the city name is impractical and that of a postal code impractical.
Equal Passions: Impractical, Impossible The second cure is an impractical as the first is unwise.
The renewal of Impractical Jokers on comedy Central UK orders Impractical Jokers complete their task, they filmed a episode.

The movie character's slapstick persona, bizarre antics, and screwball comedy are exactly what Carrey does best.
Monster Screwball Rings are specially designed rings made in large gauges.
Please send us your farce, satire, screwball, or any other subgenre that qualifies as comedy.
Forest because she had her drop ball, riser and screwball all working.
His latest screwball literary novel, CHROO, is a guaranteed good time.
First appearances of Screwball, the Paperdoll and Bobby Carr.
Screwball antics ensue as their paths cross again.
She sopranos screwball and discord fimfiction hasenkopf falten!
This is what we call a screwball comedy.
The Coen Brothers often include screwball elements in a film which may not as a whole be considered screwball or even a comedy.