The comparative form of busy is busier.
Busy becomes busier and busiest.
Teapot is a noun and, as such, does not have a comparative degree.
Comparative: Whiter Superlative: Whitest
The comparative form of longest is longer.
Thriftier is the comparative degree of thrifty.
The comparative form of busy is busier.
The comparative form of "busy" is "busier."
busier
busier..
Busy becomes busier and busiest.
busier
busier, busiest
busier, and busiest
busier, busiest
Neither. It's the positive degree.
They are "busier" and "busiest".
Comparative: busier Superlative: busiest