This document summarizes rules for comparatives and superlatives in English. It explains that comparatives are used to compare two things using suffixes like "-er" or "more". Superlatives emphasize the highest quality and use "the" plus "-est" or "most". For one syllable adjectives the suffix is "-est", for two syllables it is "-est" or "most", and for three or more syllables only "most" is used. Irregular forms are also noted.