more, most
The comparative degree is 'more magnificent' and the superlative degree is 'most magnificent'.
Shape is a noun and a verb and, as such, does not have a comparative or a superlative degree.
Comparative degree for the word 'full' is fuller Superlative for the same is fullest.
Cleanest is the superlative degree of the word clean. Cleaner is the comparative degree
better for its comparative and best for its superlative
More truthful and most truthful, respectively.
put
more in, most in
more in, most in
finer, finest
greedier, greediest
comparative is more and superlative is most.