Shape is a noun and a verb and, as such, does not have a comparative or a superlative degree.
Get is a verb and does not have comparative or superlative degrees.
thicker, thickest
Most vertical is the superlative, and more vertical is the comparative.
comparative: thicker superlative: thickest
smoother is comparative of word smooth.
Teapot is a noun and, as such, does not have a comparative degree.
The comparative degree is bigger.
The comparative degree is wider.
"Less" is the comparative degree of little.
The comparative degree of "holy" is "holier."
smoother
Thriftier is the comparative degree of thrifty.
The comparative degree of "light" is "lighter."
The comparative degree for "lush" is "lusher."
"Speed" is a noun and a verb and, as such, does not have a comparative degree. The comparative of the adjective speedy is speedier.
better for its comparative and best for its superlative