I decided to conduct a sort of survey in an idle few moments today, using Google Fight to find out how many times various terms could be found on the web. The results are below, for what they're worth, but I found them rather interesting. (Makes note to self: must get out more!!)
Nude came up 24.2 million times, naked came up 44.7 million times
Nudist : 3.5, Naturist : 2.1
Bare : 55.8 Clothed : 5.0
Clothes free : 36.9 Clothed : 5.0
Undressed : 1.9 Dressed : 36.7
Skin : 140.0 Cloth : 33.8
Nudist club : 2.25 Nudist beach : 1.9
Naturist club : 1.9 Naturist beach : 2.2
No idea what, if any, conclusions can be drawn but fascinating nonetheless!! Have a go and see what you come up with!