What's the difference between throttle and throttler?

Throttle

Definition:

(n.) The windpipe, or trachea; the weasand.
(n.) The throttle valve.
(v. t.) To compress the throat of; to choke; to strangle.
(v. t.) To utter with breaks and interruption, in the manner of a person half suffocated.
(v. t.) To shut off, or reduce flow of, as steam to an engine.
(v. i.) To have the throat obstructed so as to be in danger of suffocation; to choke; to suffocate.
(v. i.) To breathe hard, as when nearly suffocated.

Example Sentences:

(1) Talking this week to several, I heard the same story of exorbitant fees and shocking interest rates throttling real production, while Adair Turner's "socially useless" financial products attract limitless bubble credit.
(2) If the prime minister does not invite a contest, then the right thing is for the key cabinet names mentioned above to throttle any further coup attempts, to rally round him, shut up about his many weaknesses, and slog on, in the best spirit possible.
(3) Brin's contention that censorship and "walled gardens", such as Apple's operating systems and Facebook's world of applications, will throttle the world of free and linked information on which Google has built its fortune may be right.
(4) Some of Rio's most impressive architecture can still be found in and around Praça XV, but it has been throttled by modernity, its colonial charm obliterated by a concrete flyover, now black and decrepit, built directly over the top of it.
(5) The simple windkessel, throttle, and atrium principle was used for the mock loop design presented.
(6) It is the difficulty in transmitting the truth of violence.” Last year, Louis, who has been compared to the Norwegian autobiographical novelist Karl Ove Knausgaard , published his second book, Histoire de la Violence (story of violence), based on an incident when he was throttled and raped by an Algerian man he picked up in the street on Christmas Eve.
(7) Therefore, the findings that calcium antagonists could dose-dependently throttle the insulin output after addition of glucose in pancreas perfusion experiments in vitro were of considerable concern.
(8) That day, the European Union’s special envoy, Carl Bildt, met Mladic and Miloševic while the killing machine was at full throttle, though he seems not to have mentioned the massacre.
(9) Harwood, 45, who was found not guilty of Tomlinson's manslaughter on Thursday, had repeatedly been accused of using excessive force during his career, including claims he punched, throttled, kneed and unlawfully arrested people.
(10) The same number had turned up for the morning session, in which she won her heat in the style of Usain Bolt, getting out of the throttle with 25 metres to go and freewheeling home several lengths ahead of her nearest competitor.
(11) To let the BBC throttle the news market, and get bigger to compensate."
(12) The revolutionary volunteers have churned out caricatures of Gaddafi being throttled until money pops from his throat, and of him naked and alone on a desert island with a slogan that says he is with the only friend he has in the world.
(13) A review of the records of 112 nonsurvivors and 59 survivors of strangulation revealed that hyoid bone and laryngotracheal fractures occurred in both groups, particularly in throttling victims.
(14) 7.46pm: There are 4 categories of unexpected acceleration, says Toyoda, in rather scholarly fashion - problems with electronic throttles, the way the vehicle's used, the structure of the car and the structure of the parts.
(15) The cases and means of homicidal cases were classified by cutlery and pointed weapons: 243 cases, strangulation and throttling: 104 cases, blunt or similar ones: 96 cases, fire arms (pistol or hunting gun): 35 cases, poisoning: 8 cases, murder by fire: 4 cases, and 6 other cases.
(16) If they ignore two warning letters, persistent illegal filesharers should have their broadband connections throttled "to a level which would render filesharing of media files impractical while leaving basic email and web access", according to a statement after the meeting.
(17) Recommendations to minimize the number and severity of snowmobiling injuries in children include an education program for both adults and their children, use of lightweight cowling to protect the legs, incorporation of a governor on the throttle to prevent excessive speeds, and use of a restraint for children travelling as passengers on the snowmobile.
(18) By thoracic aortic throttling, spinal cord blood flow patterns have been differentiated to be of 3 types.
(19) Bloated bureaucracies slow to act and which throttle enterprise, creativity and freedom.
(20) Choi Jeong-ho, a senior official at South Korea's ministry of land, infrastructure and transport, said investigators confirmed the auto throttle was in an armed position, and an exact analysis on whether the automatic throttle system worked will be possible after an analysis on the plane's black box.