Teapot is a noun and, as such, does not have a comparative degree.
Thriftier is the comparative degree of thrifty.
The comparative of hot is hotter.The superlative of hot is hottest.
Tighter is the comparative; tightest is the superlative.
dearer , dearest
more ferocious, most ferocious
most ferocious
Hotter is the comparative degree of hot.
The comparative degree is bigger.
The comparative degree is wider.
"Less" is the comparative degree of little.
Teapot is a noun and, as such, does not have a comparative degree.
Thriftier is the comparative degree of thrifty.
"Speed" is a noun and a verb and, as such, does not have a comparative degree. The comparative of the adjective speedy is speedier.
"Less" is the comparative degree of little. The superlative degree is least.
"More important" is the comparative degree of important.
"Message" is a noun and (these days) a verb and, as such, does not have a comparative degree.