Aircraft carburetors are specifically made for aircraft. They are often more complicated than normal “small engine” carburetors as well as having an FAA manufactures airworthiness certificate. In other words to make and sell carbs for aircraft you need that cert from the FAA. There are also regulations about changing the “stock” carbs on any aircraft. In order to change to a different carb (unless it’s on a list of FAA approved carbs for your specific engine) then you need what’s called a supplemental type certificate. Again, in order to attain that, you need to be in touch with them FAA. Long story short, the difference is the regulations surrounding the aircraft carbs. In theory they work the same as any carb. And of course there are float type and pressure type.
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