What is a decarb service and a throttle body service? on 2005 Honda Accord

I went in for the recall reprogramming and received a "free" inspection. I can understand most of the items, but these 2 are new to me!

Asked by for the 2005 Honda Accord
Nothing is free. Does the car run bad? The decarboning of the intake and cleaning of the throttle body is a necessary service if it is done correctly. Good luck with that.