what is comparative degree?

it is comparison between two conditions, qualities.by it we can know which is better than....

When two items/people are compared, a comparative degree is used by putting 'er' to the adjective word in association with the word 'than'. In some cases 'more' is used. Comparative degree example: She is smarter than her sister.Sentences With Comparative Adjectives Than +adjective +er or Than+more+adjective My house is bigger than yours. Your grade is worse than mine. The Pacific Ocean is deeper than the Arctic Ocean. You are more polite than Joey. My brother is taller than I am, but he is older too.