What's the difference between bridle and crownpiece?

Bridle

Definition:

(n.) The head gear with which a horse is governed and restrained, consisting of a headstall, a bit, and reins, with other appendages.
(n.) A restraint; a curb; a check.
(n.) The piece in the interior of a gun lock, which holds in place the tumbler, sear, etc.
(n.) A span of rope, line, or chain made fast as both ends, so that another rope, line, or chain may be attached to its middle.
(n.) A mooring hawser.
(v. t.) To put a bridle upon; to equip with a bridle; as, to bridle a horse.
(v. t.) To restrain, guide, or govern, with, or as with, a bridle; to check, curb, or control; as, to bridle the passions; to bridle a muse.
(v. i.) To hold up the head, and draw in the chin, as an expression of pride, scorn, or resentment; to assume a lofty manner; -- usually with up.

Example Sentences:

(1) It led on the bridle over the last but come second, called Doctoor.
(2) Fanti, who earns $68,000 a year after 24 years on the job and two promotions, bridles at the notion that government employees are overpaid.
(3) Blood gutters brightly against his green gown, yet the man doesn't shudder or stagger or sink but trudges towards them on those tree-trunk legs and rummages around, reaches at their feet and cops hold of his head and hoists it high, and strides to his steed, snatches the bridle, steps into the stirrup and swings into the saddle still gripping his head by a handful of hair.
(4) The use of various trephine sizes and the use of a bridle suture versus a scleral ring were evaluated by several visual parameters.
(5) The middle ear cavity contained a loose mass of connective tissue with few cells, forming sail-like bridles between air-filled spaces.
(6) Strength and direction of the bridle can be modified.
(7) The newly designed nasal bridle described herein has the advantages of easy and rapid placement.
(8) Nick bridles at suggestions that as there are rarely that many lights on in One Hyde Park flats at night, it might mean not many of the foreign buyers actually live there.
(9) Santos had bridled at suggestions before the game that Greece’s tactics have not developed since winning the European Championship in 2004 with a watertight defence and set-piece prowess.
(10) Beside the boluses for the forestomach of ruminants there are the hollow bridle for horses, the ear swabs (for resorptive application), the ocular (ocusert), nasal, and vaginal forms (for resorptive therapeutic use), the skin transmembrane therapeutic systems (TTS), the pourable (pour-on and spot-on) forms, 'autodas' osmotic mini-pumps, the depot-forms, the implants, the aerosol (inhalational) forms, the 'ear rings' (ear tags) as well as the dewlaps, the rings (for tails, limbs, and ears) and the medicated feeds and liquids, and the intramammary, intrauterine, and other therapeutic forms.
(11) Progressive Canadians are especially outraged at Harper’s introduction of controversial anti-terrorism laws ; environmentalists have bridled at a climate change record that includes dropping out of the Kyoto Protocol, while others are frustrated by what they see as Canada’s diminished standing on the world stage.
(12) U-shaped bridles snap on the frame front and an adjustable, interlocking strap fits over the bridles and passes under a protective mask sealing area.
(13) NSA veterans have bridled in the past at what they consider Obama’s tepid support, but both sides earlier showed support for each other.
(14) Even by those standards, the treatment of the Liu family is severe and underscores how the Nobel award embarrassed the Chinese government, which bridles at criticisms of its human rights record and its authoritarian political system.
(15) Those who encountered Refn through his hyper-stylised LA thriller Drive might bridle at Only God Forgives, whose fugue-state narrative style, amnesiac and futureless, has more in common with Valhalla Rising, the hallucinatory but only intermittently engaging Viking movie he made before Drive (though parts of it were magnificent, including Gary Lewis's Scottish pagan talking of the barbaric Christians: "They eat their own god; eat his flesh, drink his blood.
(16) A newly designed nasal bridle and rationale for its clinical use are described.
(17) If you want to see sleaze, just look in the mirror.” He also bridles slightly at the mention of the other phrase that is frequently applied to him – dirty trickster.
(18) Brennan bridles at that, saying it would be "a very weighty decision in terms of declassifying that report."
(19) These have been more dominated by bridle and adhesions (56%) from which (42%) post operative.
(20) Of Rojo’s injury, Van Gaal said: I don’t think he’s available next week [for the visit of Crystal Palace].” When it was put to him that United have only half the amount of Chelsea’s 26 points, the 63-year-old bridled.