Rule 9. To show whether the difference between the compared thing/person is small or big, we use quantifiers for the comparative degree of an adjective such as (A bit, a little, a lot, far, much, a great deal, significantly, etc).
Example:
My hostel is only marginally bigger than yours.
She is a little more popular than her sister in their school.
Australia is slightly smaller than Africa.
We don’t use quantifiers with superlative degrees of adjectives but there are certain phrases commonly used with the superlative degrees of comparison.

Rule. 10. While changing the degree of comparison for the irregular adjectives, the word completely changes instead of adding ‘er’ or ‘est’.
Examples:
She has little milk in the jar.
She has less milk than he has.
She has the least amount of milk.