What is the difference between double comparative and double superlative?

The difference between double comparative and double superlative lies in the way they are used to compare two or more things or individuals.

Double comparative is used when we want to compare two things or individuals and emphasize that one has a higher degree of a certain quality or characteristic than the other. It involves the use of two comparative forms of an adjective or adverb in a sentence. For example, "The more I study, the better my grades become." In this sentence, the adjective "good" is used in its comparative form "better" twice to emphasize the increasing improvement in grades with increased studying.

On the other hand, double superlative is used when we want to compare three or more things or individuals and emphasize that one has the highest degree of a certain quality or characteristic among all. It involves the use of two superlative forms of an adjective or adverb in a sentence. For example, "She is the most intelligent and the most hardworking student in the class." In this sentence, the adjective "intelligent" and the adverb "hardworking" are used in their superlative forms "most intelligent" and "most hardworking" to highlight that the subject is the most outstanding in both qualities among all the students in the class.

In summary, the difference between double comparative and double superlative lies in the number of things or individuals being compared. Double comparative is used to compare two things, while double superlative is used to compare three or more things.