What's the difference between cockney and cockneyfy?

Cockney

Definition:

(n.) An effeminate person; a spoilt child.
(n.) A native or resident of the city of London; -- used contemptuously.
(a.) Of or relating to, or like, cockneys.

Example Sentences:

(1) Biggs wasn't a cuddly heart of gold cockney character to be feted .
(2) Thus soaps are sacrosanct, Murderland with Robbie Coltrane is in, but Al Murray's Pub Landlord is definitely out, because it "goes down like a cup of cold sick in Scotland, a cockney landlord shouting at an audience".
(3) He even has a soft spot for the Cockney Rejects, pugnacious purveyors of football singalongs.
(4) Danny Green plays punchy ex-boxer "One-Round", Peter Sellers's Harry is the archetypal cockney spiv, Cecil Parker's seedy ex-officer Major Courtney a recurrent postwar figure.
(5) It was a dish that was once as synonymous with cockney London as Chas'n'Dave, Pearly Queens and Bow Bells.
(6) "He's amazing, that geezer," he says, his voice betraying his Cornish roots as well as traces of cockney.
(7) Hepburn went on to play an annoying cockney flower girl in My Fair Lady.
(8) To emphasise the point, the Batmobile steals every scene it's in, juggernauting across the Gotham rooftops in a spectacular chase that ends with Wayne earning a spanking from his lovable cockney butler Michael Caine.
(9) For that we can thank screenwriter Barrie Keefe (“sense of history... Londoner”), who in these years was making a series of runs at the King Lear legend – here and in his plays Black Lear and King Of England – and found a clear political, historical and social context in which to strip this cockney king of everything he has.
(10) The film critic, who says Statham's name with an approximation of his low, gruff cockney, likes the chance the actor took with Hummingbird and also admires his 2011 film Blitz , co-starring Paddy Considine.
(11) The front office was run by a jovial Cockney, Charles Vidler, who had been the butler at the Astors' country house, Cliveden, until he was fired for being found in Lord Astor's bed.
(12) Then a voiceover began in a chirpy cockney accent – the ad’s one concession to the existence of a working class – informing viewers that “There are nearly 5 million council tenants in England and Wales, many with families like yours ... You can decide whether to turn your home into your house.” Sales started slowly.
(13) The following year he sold over a million records in Britain alone, with another novelty song, My Old Man's A Dustman, a re-write of a Liverpool folk tune and first world war marching song, up-dated with cockney jokes and lyrics, which topped the charts for four weeks.
(14) She said they even stole the lyrics for one of their songs from the Cockney Rejects.
(15) Less dramatic, but betraying the cheeky cockney wit which so endeared him to Newcastle fans, was Dennis Wise's response to being heckled.
(16) It was the sort of musically accomplished, well-arranged, album-oriented art-pop that EMI had been comfortable with since the Beatles and had pursued with Pink Floyd, Cockney Rebel and Queen.
(17) Albert Finney was cast as the north- country troublemaker Bamforth, but got appendicitis; he was replaced by the then unknown O'Toole, who turned the character into a cockney with no loss of plausibility.
(18) Another said : "He is a cockney wide-boy agent, not unlike Jonathan in many ways: a wheeler, a dealer, a ducker, a diver.
(19) Her debut show, Lady Cariad's Characters, features a host of memorable sorts (including a cheery cult member, a singing cockney and a seven year-old stand-up called Andrew), all realised with plenty of dexterity and featuring some sublimely funny moments along the way.
(20) • Report dated Thursday, May 4 1916 Edward Casey, an Irish Cockney, on his time in Ireland Walking down this small town [Kilmallock in County Limerick] with narrow streets, in uniform, with Shamas who towered over me, was an experience that still remains in my mind.