As far as 'hobby vernacular' goes... the term 'water feature' is used to describe a medium to large body of water with moving parts, i.e a drip wall, waterfall, stream or other.
A simple false bottom access or a small 'pond' is not really a 'feature'. It's just a water access point or a 'pond'.
Almost all species of commonly available dart frogs do no utilize large bodies of water.
No dart frogs would inhabit a 'swamp' or thrive in a paludarium.
Stop the paludarium madness. It appears to be the newest 'noob' hit since green carpet moss.
I Actually find it to be very helpful in both humidity and temperature. I have a 5 gallon tank below with the return pump inside it I keep a water heater at about 75F , it goes on and off with my controller that also control my heat pads. I solely use it for that purpose only its all the way in the back of the tank dripping on a piece of cork , intentions was strictly to help maintain humidity and temperature not for pleasure.