In grammar, the comparative degree that expresses that one item is more ... than another (equivalent to English -er or more ...).
英語の比較級は短い形容詞なら -er を付けて作ることが多い。
English comparatives often add -er for short adjectives.
『この本はあの本より面白い』は日本語の比較級に当たる表現だ。
'This book is more interesting than that one' is a comparative expression in Japanese.
比較級と最上級の違いを確認しておこう。
Let's check the difference between the comparative and the superlative.