I would like to clarify something. Proper term for a suppressor is supressor not silencer its suppesor. Its that way because it doesnt muffle all of the inner-workings, just the muzzle blast.
Texas man, do you have some authoritative source for your claim? US law describes suppressors as mufflers or silencers; the word suppressor is not mentioned at all. Suppressor is a relatively term even if it is more accurate at describing what they do.
I prefer to use the word silencer as no one is likely to think I am talking about a flash suppressor when describing my gun mufflers.