"Banking" is definitely a different standard of calme-ness... :-)
Yeah I would have bet hard money that I was going to get a wise crack on my answer. Joke aside these guys are not born "Banking Industry" Translators.
Here's what I noticed thinking of calm and quiet - If [insert word] can have moods eg People, Music, weather, etc... Calm works.
But when it's all about noise it doesn't. (Fart, bang, muffler, firearms, lightning, vehicle, tools... keyboard
) Calm doesn't work.
Check this out just for fun
http://thesaurus.com/browse/calm http://thesaurus.com/browse/quietCalm - adj peaceful, quiet (inanimate)
Quiet - adj calm, peaceful
You will also notice that some words listed in synonyms are the same but Calm is not listed as a synonym of Quiet and Quiet is not listed in synonyms of Calm.
Finally and between you and me (and the rest of GHers reading this) if your translator still don't "admit" it then it's no longer a semantic matter. It's more of a big ego issue and I'm not equipped to deal with it.