What's the difference between troublemaker and troubler?

Troublemaker

Definition:

Example Sentences:

(1) In his V-neck sweater, dad jeans and white New Balance sneakers, Michael Lewis doesn’t look like a troublemaker.
(2) Moreover, the state-controlled Chinese media have in a series of broadcasts denounced a number of detained “suspects” as members of a crime syndicate engaging in “rights-defence-style troublemaking”, and paraded some of those detained “confessing” to wrongdoing before they have even been publicly indicted.
(3) Some kids we thought were complete troublemakers were just angry and upset because they’d had no food since the day before.
(4) But, while I can't stress enough that I don't wish to be a troublemaker, there is a slight problem with the maths.
(5) He has earned a reputation as something of a troublemaker in government, often having to be hauled back into line by the president or party officials after speaking out on controversial issues.
(6) I have seen the organisational response to the full spectrum of sexual harassment and violence, including rape … and I would say now that if I was raped during a country visit I would not report it to my organisation.” Speaking out meant being labelled a feminist troublemaker, the source said.
(7) Crow's public image as a troublemaker and bully boy was misplaced.
(8) One demonstrator trapped behind police lines told Guardian Unlimited: "It's ridiculous, there are no obvious troublemakers here, it's just a mix of ordinary people and tourists, and we want to go home."
(9) Political activists are now often cast as troublemakers or foreign agents and hundreds of the young activists who sparked the revolt four years ago are either in prison on charges of breaking a new protest law or have left the country.
(10) When Blair Peach was struck on the head during the demonstration against the National Front, he was a victim not only of the police but of a barely suppressed public attitude – encouraged by a large portion of the media – that people who went on such protests were troublemakers who deserved all that they got – and if police officers cracked a few heads, then they had probably been grievously provoked by the troublemakers.
(11) With an iron will, she kept him away from troublemakers and kept him busy.
(12) They should not mix with the radicals and troublemakers and be incited or used by others to commit any illegal acts.” Several reporters at the scene described being shoved and manhandled by hostile police.
(13) One elderly neighbour described him as a troublemaker since his teens but said he became more prominent after 2011 through his links with Islamist militia commanders in the city.
(14) Has it become an unwitting accomplice in silencing and removing "troublemakers"?
(15) If you get in trouble, that doesn't mean you're a troublemaker, it means you need to try harder to behave.
(16) Photograph: Helen Maybanks However, had Homegrown been pulled as a result of threats from some fringe Islamist organisation, we’d now be celebrated as this generation’s Salman Rushdies – courageous defenders of free speech fighting off conservative forces from within our imagined communities, rather than as troublemakers.
(17) She said that when she complained to her first sergeant, she was told she was a troublemaker.
(18) As one panellist marvelled: "She's a real troublemaker.
(19) Nimeiri started transferring the troublemakers to small towns,” said El Sheikh, who worked as the railway’s accountant for 30 years.
(20) The surge in support for Corbyn has prompted warnings that “troublemakers” on the left and the right are abusing Labour’s new leadership rules by signing up as supporters so they can vote for Corbyn.