Difference between Flail and Thrash

FLAIL vs THRASH: NOUN

An ancient military weapon, like the common flail, often having the striking part armed with rows of spikes, or loaded.
An implement consisting of handle with a free swinging stick at the end; used in manual threshing
A manual threshing device consisting of a long wooden handle or staff and a shorter, free-swinging stick attached to its end.
Milit., a similar implement used as a weapon of war in the middle ages.
An instrument for threshing or beating grain from the ear, consisting of the hand-staff, which is held in the hand, the swingle or swiple, which strikes the grain, and the middle band, which connects the hand-staff and swingle, and may be a thong of leather or a rope of hemp or straw.
A weapon which has the (usually spherical) striking part attached to the handle with a flexible joint such as a chain.
A tool used for threshing, consisting of a long handle with a shorter stick attached with a short piece of chain, thong or similar material.

A particularly aggressive and intense form of heavy metal music with a focus on speed, technical precision, and alternate picking.
A beat or blow; the sound of beating.
A swimming kick used while treading water
A rush.
The act or an instance of thrashing.

Beat thoroughly and conclusively in a competition or fight
In computer architecture, to cause poor performance of a virtual memory (or paging) system.
To extensively test a software system, giving a program various inputs and observing the behavior and outputs that result.
To move about wildly or violently; to flail.
To defeat utterly.
To beat mercilessly.
Dance the slam dance
Beat thoroughly in a competition or fight
Beat so fast that (the heart's) output starts dropping until (it) does not manage to pump out blood at all
Move data into and out of core rather than performing useful computation
Beat the seeds out of a grain
Give a thrashing to; beat hard
Move or stir about violently

To beat soundly, as with a stick or whip; to drub.
To beat out grain from, as straw or husks; to beat the straw or husk of (grain) with a flail; to beat off, as the kernels of grain.
Hence, to labor; to toil; also, to move violently.
To practice thrashing grain or the like; to perform the business of beating grain from straw.

Wiggle, Waggle, Bludgeon, Gyrate, Lunge, Twitch, Totter, Scream, Squirm, Shriek, Stomp, Twirl, Lam, Thresh, Thrash

Slam dance, Thrash about, Thresh about, Bat, Toss, Lam, Convulse, Slash, Lick, Flail, Slam, Thresh, Mosh, Clobber, Drub

Thump, Wail, Contort, Wiggle, Waggle, Gyrate, Lunge, Twitch, Totter, Scream, Squirm, Shriek, Stomp, Twirl, Lam

Tan, Baste, Tar, Lace, Whip, Wallop, Discuss, Bat, Toss, Lam, Slash, Lick, Flail, Slam, Clobber

These Talusdisperses with his flail like a swarm of flies.
Flail has been known to immolate its intended target.
Test and evaluation of hammer heads for flail machines.
And then I can attach that to my flail?
Saw them flail and flap like a rag doll.
The flail in her left hand attracts celestial energy.
Observe whether the patient has a flail chest.
Cap of a Flail or of the, Handle of a Flail.
Edmund, a remarkably average human fighter with no magical abilities at all, but he always spawns with a highly enchanted flail or dire flail.
Flail Chest: For massive flail chest with severe respiratory compromise, consider advanced airway per the AIRWAY MANAGEMENT Protocol.

There is an unwritten law in thrash metal which literally means: the better your riffage is, the better thrash you got.
Thrash to Classic Metal to Groove aspects, with a bit less groove this time around and a lot more thrash.
The last major thrash scene was the German thrash metal scene.
The best thrash metal guitarists from the legendary Big Four thrash bands shaped a genre and influenced a generation of guitar players.
The band certainly has that distinctive European thrash flair and echoes of European thrash titans like Kreator and Destruction abound here.
The Dark Roots of Thrash II tour embodies the true lineage of American thrash metal.
While not as heavy as some thrash bands Testament still ranks as the heaviest of classic american thrash.
The first release of its kind combined vintage thrash talents with newer metal musicians who incorporate thrash styles.
Don't try Rugby the South Africans and Kiwis will thrash you, like they regularly thrash us.
Their sophomore release created the thrash wellspring from which many succeeding thrash bands would siphon inspiraton.