From the fanbook
"AMPLIFICATION (展延 - ten’en) Wrapping oneself in a domain like “water”. The act of expanding a domain thinly, like a film, over one’s own body is called Domain Amplification. When Domain Amplification is activated, it can neutralize the sure-hit effects of a Domain Expansion. It can also neutralize the technique of any target that is touched, and has the great merit of allowing the user to act freely even while it is activated. However, while using Domain Amplification the innate technique cannot be activated, so the user is limited to employing physical attacks."
Simple domains counter the barriers that are imbued by CTs/sure hits, DA counters by creating a domain around the body that is not imbued with a CT/ doesn't grant you a CT usage (an empty space) and by allowing your enemy’s CT to flow into that empty space, it gets neutralized so by following this mechanism DAs can work against both CTs and Domains sure hits, however, SDs cant neutralize CTs, which makes DA more advanced, moreover DA isn't considered a barrier technique while SD is a barrier technique.
Hollow Wicker Basket is the original form of SDs, Falling blossom is a cursed energy system that repels whatever touches you with CE, from the fanbook:
"The secret art Falling Blossom Emotion is an anti-domain technique that protects you by releasing your own cursed energy the moment you are touched by a sure-hit technique activated by your opponent."