What's the difference between czar and ukase?

Czar

Definition:

(n.) A king; a chief; the title of the emperor of Russia.

Example Sentences:

(1) Sadiq Khan might be appointing a “night czar” for London , but the recent closure of Fabric is part of a wider trend of disappearing nightlife.
(2) CZAR is similar in overall organization to the other two SL-RNA-associated elements.
(3) Every incoming mayor of New York declares his intentions for a vast rodenticide – Giuliani even appointed a “rat czar” to oversee the carnage – only to leave the next guy even more to deal with.
(4) But as Associated Press detailed this weekend , the five members he put on the board are largely Democratic loyalists if not hard-core Obama loyalists: "Four of the five review panel members previously worked for Democratic administrations: Peter Swire, former Office of Management and Budget privacy director under President Bill Clinton; Michael Morell, Obama's former deputy CIA director; Richard Clarke, former counterterrorism coordinator under Clinton and later for President George W. Bush; and Cass Sunstein, Obama's former regulatory czar.
(5) However, sources said that none of the parties involved in previous negotiations – including Miller, Labour deputy leader Harriet Harman or David Cameron's policy czar Oliver Letwin, who came up with the concept of a royal charter to underpin a new press watchdog – will be involved.
(6) History will remember it as a significant inflection point,” said Norm Eisen , former ethics czar under Barack Obama.
(7) The White House is reversing its previous insistence that government departments were coordinating the federal response to the presence of Ebola in the US successfully even without a single figurehead heading up the effort and appointing a so-called Ebola “czar”.
(8) Sunstein, a Harvard law school professor who has been described as an intellectual inspiration for Obama, only left his job as White House's "regulatory czar" last year.
(9) A year ago, the Librarian of Congress – James Billington, an 84-year-old copyright czar of our digital age – issued a ruling that made it illegal for an American to unlock his or her smartphone, potentially with up to five years in prison and $500,000 on the line (or at least with a civil penalty).
(10) Economic czar George Jackson put it plainly when he said of gentrification: “ Bring it on .” And so the city has.
(11) Obama has also chosen to create a new position of White House energy czar.
(12) But to dream about progress beyond the Holder era misses the fundamental point: the Cossacks work for the Czar.
(13) The United Nations' drugs czar told Nato that Afghan insurgents were withholding thousands of tonnes of heroin and treating their drugs like "savings accounts" to manipulate street prices in the west, according to a leaked US cable.
(14) Under the czars, imperial Russia extended its reach over time.
(15) Barack Obama's former "car czar" has attacked the "stunningly poor management" he encountered at Detroit's carmakers as he worked to avert a collapse of America's biggest auto firms earlier this year.
(16) Kerry McCarthy, Labour's new media campaign spokesperson – or "Twitter Czar", as reporters prefer to call her – is franker about Sarah Brown's value.
(17) The White House spokesman, Josh Earnest, resisted calls for a single “Ebola czar” to be placed in charge of the federal response on Wednesday, claiming “people should be encouraged that the government is demonstrating a tenacious adaptive response [to Ebola]” among a range of federal agencies.
(18) He is the government's board diversity czar and is calling for more women in boardrooms.
(19) Annas criticizes Webster for what he sees as the politicization of the Court, the Chief Justice's failure to assert leadership and remove the abortion debate from the political arena, and the implicit appointment of one Justice as "abortion czar" on a Court where four Justices seem prepared to uphold Roe, and four prepared to reverse or curtail the 1973 decision.
(20) Nepotism and election fraud have endured,” he said, adding that “power abuse, corruption as well as legal and disciplinary violations have been spreading.” In his comments, Xi made special reference to several toppled officials punished for corruption, including former security czar Zhou Yongkang , who state media has previously accused of plotting to challenge the country’s leaders.