What's the difference between brash and stonebrash?

Brash

Definition:

(a.) Hasty in temper; impetuous.
(a.) Brittle, as wood or vegetables.
(n.) A rash or eruption; a sudden or transient fit of sickness.
(n.) Refuse boughs of trees; also, the clippings of hedges.
(n.) Broken and angular fragments of rocks underlying alluvial deposits.
(n.) Broken fragments of ice.

Example Sentences:

(1) A fast-talking and brash Glaswegian, he had walked into the party's then headquarters in Cowley Street and offered it money.
(2) Hodgson’s methods, especially towards the end, were viewed as dated and a coach, as Roy Keane put it brashly a few weeks ago in a slightly different context, “who’s got the whistle around his neck and a clipboard” appears sought after.
(3) Letta was thrust aside by the brash, ambitious Renzi just as Italy began to show signs of growth and bond market investors appeared less concerned over the country’s ability to repay its debts.
(4) Fortunately for his detractors, who bristle at his brash TV persona and penchant for bullying guests, Shimada conceded his TV career was at an end: "From tomorrow I will become just another regular person.
(5) It is expressed quietly in the case of singer-songwriters Laura Veirs and Laura Marling, and brashly in pop with Lady Gaga and Rihanna.
(6) Lewis Nkosi, who has died after a stroke aged 73, once described his fellow writers on South Africa's Drum magazine as "the new Africans, cut adrift from the tribal reserve – urbanised, eager, fast-talking and brash".
(7) The older generation regard the set as brash youngsters scheming their way to the top in what Conway called the "bistros" of Notting Hill.
(8) Speaking in his hometown of Miami, Rubio congratulated Donald Trump on his victory in the Florida primary while nodding to the grassroots uprising that had propelled the brash billionaire to frontrunner status.
(9) Of course there was, and still is, wild hedonism among some of the more flamboyant and brash members of the trading community, but focusing on the outliers is no way to properly judge the majority of the industry.
(10) The brash, 39-year-old Matteo Renzi is Italy's third unelected prime minister since November 2011.
(11) Mistakes – bad manners, poor taste, an excess of high spirits – could put you, your parents, and your people at risk Too many Negroes, it was said, showed off the wrong things: their loud voices, their brash and garish ways; their gift for popular music and dance, for sports rather than the humanities and sciences.
(12) A recent visit to Hamleys' new dolls area turned up a bumper brash-pack of new fashion dolls from the big companies: LaDeeDa Dolls (a swift move by SpinMaster), buzzing Flitter Fairies (Wow Stuff), glow-in-the-dark Bratzillaz (a brazen MGA fast-follow of the huge Mattel Monster High), Ever After High (Mattel), flashing Novi Stars (also MGA, alien dolls with Camden market hair springs and extensions) and all sorts of blinky, noisy merch spinoffs.
(13) Trump insisted that he is a believer in free trade and declared: “I am not an isolationist.” But it was hard to escape the testy relationship between the bookish woman now seen as a crucial bulwark of the postwar liberal order and the brash businessman who rose to power on a populist tide.
(14) The brash Candy brothers, who are behind some of the most ambitious upmarket residential developments in London, appear to have benefited from Kaupthing's demise.
(15) And while the brash billionaire may not have the support of the majority of Republicans, a growing plurality has propelled him to overwhelming victories in one contest after the other.
(16) As the twin inspirations of the pro-democracy movement, they were strikingly contrasting figures: Walesa a flamboyant, brash, working-class union agitator; Havel a soft-spoken intellectual from a well-to-do family, who was a reluctant politician.
(17) This year, an unnamed Washington media executive was quoted as saying: “There will be minimal celebrities in that room … it’s going to be difficult to get any talent there.” The gulf between the traditionally more liberal-leaning household names of show business and Trump the brash populist was evident at Trump’s inauguration in January.
(18) Trump likes to boast he is the only politician that doesn’t use a teleprompter, but the truth is he adheres to a well-rehearsed script in which he is the brash, uncompromising and tough protagonist.
(19) Charismatic and brash, the 62-year-old son of a Communist party "immortal" won admirers with a string of bold initiatives, but alarmed liberals and party insiders who saw him as a dangerously ambitious rival and a potential strongman.
(20) Photograph: Evgenia Eliseeva Those hoping to catch a glimpse of Walter White must have been sorely disappointed in the second act of Bryan Cranston’s brash, confident performance in All the Way .